Don't forget speech: The human face has features that enable speech and language in all sorts of flavors but altering the shape of the vocal tract (vocal chords up to the tip of our now-protruding nose) would alter how well we speak. Also, many furs don't have cheeks the way humans do either.
Non-verbal communication: All animals, humans included, communicate without words. Our repertoire would just be expanded with fur, fangs, tails, ears, and whiskers, and the occasional instance of purring.
Nose in the way of eyesight: To a certain extent but if you hold your fists in line at your nose and see how much vision is blocked it isn't too much and you could always tip your head down just slightly to recover most of your field of view.
Winged fursonas: What about wings? Birds are light for a reason. Lift is difficult to generate.
Species barriers revisited: Your theory depends on how the genome is constructed. If the genes that encode for the apparent 'species' are encoded with the same genes that currently code for skin, hair, and eye color then you'd get hybrids of all types until you eventually get mixing like you do with humans now. If the genome is more like the animals from which the fursona is built then you could have incompatibility issues if someone is too different from someone else.
Clothing: Let us not forget that most animals with fur developed it to serve the same purpose as humans use clothing. It's why humans took the outsides off of animals for so long to use as clothing and still do today, albeit to a much lesser extent. If you dress an arctic wolf fursona in a heavy winter coat they will probably overheat and keel over.
Sweat: On a related note, that arctic wolf fursona wouldn't sweat if they are built closer to the wolf than the human side of things. If a fursona sweats then the wet dog smell might become more of an issue in the same way as human body odor becomes a problem if you do not use deoderant or bathe, sometimes as when one is on a camping trip.

This is just a few of the ones I thought of to add to your list. It wouldn't be easy being a fursona but certainly not impossible.

Cheers;

SilverWuff (white wolf with black stripes whose wings come and go when he pleases - and, you didn't even touch on superhuman powers...)

XD

yea the whole speech thing... I'll have to add that.

But the clothes thing was just going off of the way we actually are and the way that they are drawn. I mean, if one day you woke up, and everyone was their Fursona, we would probably still wear clothes, because unlike animals, we hide our private parts.

And I do see a problem with the whole sweat thing... but anyone would smell bad if they didnt bathe on a hiking trip! XD
And i'm pretty sure that the wet dog smell comes from them not bathing regularly... but if it's just their fur, then yea swimming would be a problem

and yes, wings would call for another clothing change, but thats why i had "etc." in the document to show that there are more things to change, but im just not listing them all.

And I never said that the muzzle would block your vision very much, but it would be a noticeable difference.

also, Im not exactly taking super powers into consideration its more along the lines of basic anthropomorphic transformation. and going along with that, we would still be humans in the brain and heart, so we would still want to wear clothes and speak.

While I agree with your genome view of reproduction, its still something that we wouldnt know. I mean, having wings and not having wings or having scales or fur or feathers, is a pretty huge difference... so because of that we would either not be able to reproduce with those outside our general species, or we would get some very strange and cool hybrids in the future, like I had mentioned above.

(I forgot to add this to my last comment)

Comments noted.
Of course, everyone's view on how genetics would work is up to them. If it helps you at all, human are genetically about fifty percent the same as a banana. To me, this explains an awful lot.
I didn't mean for it to seem like my comments were the be all and end all of the topic but it's rare to see someone actually posting something related to becoming a furry in a more practical sense. Most people just wave their hands and assume that everything is honkey dorey when it is clear from our very cursory glance at the issue here that it is not so simple.
Maybe we should suggest that a geneticist and an anatomist (I'm not sure that's actually a word) should be invited as guests of honor at furry conventions...

Oh no, I didnt see your comments like that, I was just clarifying because I often forget to do that.

and
"human are genetically about fifty percent the same as a banana" Seriously?!? yea that does explain a lot!

XD

You're taking everything in a much more literal way. Also, it's not like if everyone was going to suddenly turn into a furry. This would have been something that would have had accommodations made throughout the years. Also, the comments were big blocks of text, so TLDR.

Who's to say fur would absorb as much water as animals do? The way evolution works, fur would probably be a little more resistant to water to aid with swimming. I also don't think that fur/feathers would shed as much as real animals do.

Sheaths can easily be pulled back and most are easily flexible enough to be able to point them down at a urinal. Also, some animal's semen is not nearly as sticky as humans can be, though that might be because of diet. This just points back at how water resistant fur/feathers would be.

Number 6 is an easily addressed one. Punnett Squares. You wouldn't have so much hybrids, as you would having species with mixed DNA traits. A cat and Mouse have a kid. It's either going to be a Cat or Mouse. A Dog and Mouse have a kid. It's either going to be a Dog or Mouse.
If both pairs had a cat and dog respectively, then those two offspring could, together, have a mouse as a child.

Also, uh, fecal matter.. I think for the most part it would be a way different consistency than humans, and therefore wouldn't provide as much of a detriment to everyday life.

The only real thing I think would be an issue, or at least, that I wonder about, is vehicles. I take a more realistic approach, in thinking that everyone is going to be between 5 foot and 6 and a half at most. You're not going to have Eight foot tall tigers, etc. A mouse could be 6'4" a horse could be 5'1". But that's not the issue, it's "What about deer?"

While most wings could fold behind the person and be pressed against the seat, and tails could slip behind the seat through a hole, antlers... really can't do much of anything but get in the way, in that situation.

Those are some really interesting ideas!

I just posted this because these are my views on things as if, for some freak reason, everyone actually DID become their fursona identity using the functions of the way animals of that species work already.

However like you said, if we evolved that way then it'd be perfectly plausible that we'd adapt things like less absorbent fur and what-not.




But you should read the first comment made by tbutargensis. He/she had some good ideas as well

I keep trying, but I see the Wall o' text and my eyes glaze over.

Species barriers would not be a problem if only the individuals DNA was changed, and not the DNA of the gametes. The individual would be human/ animal but the gametes would be completely human. Just like how some types of cancer are not hereditary, but caused by mutations later in life. Assuming that the change to fursona was a spontaneous mutation.

Really interesting topic by the way. I've heard it discussed before, but this is the first time I've seen anyone put any real thought into it.