I can suggest using PostyBirb - it's an app for submitting art to multiple sites. Can make batch-posting to FA a little easier, too. Not an ideal solution, but better than nothing.
It's probably to discourage upload spamming. So I guess the easiest thing to do is to put a few selected pictures on FA of every set and put all the rest on Twitter or somewhere else where it's easier to upload a lot of pictures!^^
I think that's a talll order considering this site still doesn't have proper video support, decent flash support, acccount name changes, or anything from the last ten years that would make it remotely modern, ten years ago.
PostyBirb will help even tho they cant spell bird right lol