200MB is too much even for 1080p AMVs. The current limit is pretty much fine, maybe adding an extra 20 or so MB at most might be fine just to play it safe, because with proper x264 settings, getting a 1080p AMV under 100MB should be pretty easy unless you abused some big and fast grain for the whole thing. And even then it might be possible to still get it barely in by using the fgo patch... or maybe not. But I doubt most AMVs abuse grain like that, so it would be an exceptional case that falls in the big upoloads requests, certainly not worth increasing the limit for every vid.
Couple it with the fact that 99% of anime is SD or even if HD just 540 or 720, and you understand that most 1080p AMVs are just upscales not worth the space in either case, so yeah... I'd say no, but I'll leave the last word to the admins.
