Like...I don't know...
How to shoot a bullet to kill a macro instantly through the head.

Or that ya 'bout to get blown up by bombs like in Cloverfield.

Mmm...Bombs

you shoot the eye. a paintball pellet can kill you if it strikes you in the eye because it goes straight through your eyeball and through the thinnest part of the skull and straight into your brain.

if you know where to shoot you can fataly wound a macro with a bullet.

...I now know how to kill people with a paintball gun!

Remember, macros. Just because you gain a few (hundred) feet in height doesn't mean you automatically become immortal.

Also, if you look at it from a realistic perspective, stomping on a micro car would HURT! The glass and the metal would dig into your sole... not pleasant.

Actually, from a "realistic" perspective in order to walk normally and so forth as a proportioned macro you would need several "necessary secondary powers" that most people do not address.

These "necessary secondary powers" may or may not make you less fragile to things like micro-glass and ordinary bullets, etc.

At the very least your bones would have to be made of a super-strong material and your muscles would have to be able to exert more force than would be normal. If you extend the bone effect to skin then yeah.

Though, frankly, smart macros wear shoes during their rampages anyway... it's just pawsluts don't like it that way. >.> I suppose a teasy macro rampager might wear shoes while stomping out cars then take 'em off when they've cornered a crowd... hehehe

Moral of the story: The Farsight is overpowered.