Hi crowblack.
1. Finn's editor allows for raising ratings above 99, to a max of 127. Don't know about 127 Aggression. I have mine at 0 for all players. It's one of the ratings that causes issues with gameplay and player behavior.
2. Rosters, player names and faces, coaches and schedules can all be edited and that's it (as far as I can remember). The graphics and animations cannot be edited if that's what you're wanting to know.
3. 2K isn't doing anything. Nobody knows what's going on with Backbreaker; maybe go to their forum and read up on the latest news.