2) If not why not? I figure it would cut down on a bunch of BS issues of people asking / complaining about their ban.
If I'm correct, I have seen few request/discussion on changing the ban messages so that user can know what exactly they did but nothing happened so far. If the new forum software is coming anytime soon, that would also not make sense I think as things may not be the same as SMF in the new one. However, a specific reason would be good to avoid a lot of unnecessary threads in meta.