This game doesn't need more money. You can change the way and the reasons it's given to managers but you should NOT change the global amount.
It's like BIG said : more money, more problems !
We need:
1) numbers numbers and numbers about % of staff, with % of training, health etc (please see Hattrick)
2) manage garbage time: user can set players who play in garbage time
3) revision of salary formula
4) money from friendly match
5)revision about draft but I have not idea how. I read more more suggestions about it