I'm proposing the idea of a career mode in which the user will control 1 player throughout the duration of their career.
The user will aim to make a legendary blood bowl player. On the pitch, they will only control their own player. Players will face challenges and make decisions that will gain favour with players, the coach sponsors and fans mid-game. Users can buy equipment, bribes, weapons and dope to help their player reach success.
Career mode ends when the user retires the player, the player dies, becomes too old to play or receives a lifetime ban.
This opens up the possibility of co-op multiplayer where multiple players can play on the same team online.
I've written a lot more for this idea but its pretty long so I'll post this for now and if it gains momentum I'll post the rest.