thats a question without an answer. We don't know yet. And the relevant post is the 'dead end ideas' sticky in the suggestions forum
Seriously you dont have to ask, they will tell you if and when it will come. Till then, search engines are your friends. USE THEM!
the roms do not need fixing. If they extract then they're intact and 99% of the problems are the fault of the emulator.
Yeah, if you've been using an emulator, blame it on that, cause its not perfect thus not all in-game features will work on some games, nor are some game even able to run. Unless ... the downloaded archive (.RAR/.ZIP) couldn't be extracted.