I don't think it's a bad idea at all. For me, a twist on the training system could be benefitial for the game and has to be done. The problem here is about "what" to change in order to keep the essential of training.
From my point of view, the game developers / BB's / the ones on charge of the game, are trying to improve the players as much as they can to reach new limits as we saw from some seasons ago changes on the Draft system (big improves on 19yo players) and facilities (youth trainer option, gym facility, etc), so the point of "easy, quick and cheap training and every players at max skills" being said from a great respectable GM isn't quite on the line as the game seems to go.
A lot of people are satisfied with the actual training system as it is, but maybe that's because it is what we've always had... maybe! Probably if the system was different from the beggining we would have been OK with it.
I really like BB as it is in that part of the game, but I wouldn't close any doors ro change something.