I can understand what you're saying, but I guess training as well as GE will never be touched by BB's.
Besides wooden U21 centers literally every player has to train at least a season of 1x1 sf/pf. Not only does it give elasticity, it is also the biggest TSP per week kind of training. It is an issue, but I look at it the same way I look at entire training - it's BB and not real world. Also as long as you have contacts in the game you can just arrange training with other players which I find to be a part of the managerial game.
A friend is training 1x1 for the next two seasons because he drafted a HoF? Good, arrange a "trade-off": you sell your youngster for him (as long as it is within the rules) and he trains him for you. In the meantime - who knows, you can train other guys, you can compete or both. After the X ammount of DR and HN your trainee has - you buy him back. Both of you win.