Hi! I got some ideas that could be implemented in BB. They are only my opinion, I thing the game would be so much better with them. So lets start:
1. Player minutes
That would be a game changer. You would be able allocate your players minutes. That way your star players could play more, or if you intend to train, you could train one more extra player with that. That idea actually hit me when i was playing 2k :D
http://prntscr.com/e1s0ld.
2. Player Career Statistics
We could have some career stats informations. For example Hattrick is a browser game like BB, but they are already using it. There is a picture: http://prntscr.com/e1s2du. On BB we could have stats like that: http://prntscr.com/e1s2l6( the numbers are made up :D)
3. Player roles
Player roles should help new users. The point here is you could sort players in player roles( starter, key player, bench warmer, prospect). Thats why i said that would be great for new users, they dont know their team yet and they could make a list of their players. Its just a nice interface.
4. Offensive options
Every team have superstars. You could have 3 offensive options to choose before games. Like for example:
1: Lebron
2: Kyrie
3. Love
Once again these are just some ideas that i had, and i felt i have to share them :)