this is not new. This has been part of 2K NBA games as long as I can remember. So "adding" is misleading information.
why should you be able to use the C4 as a grenade? The nerf is just fine in my opinion. The thing that needs balancing now is the innability to kill people coming at you with trucks. and that wallhacking AR sniper bs of VAL
that has been removed with this update. There are still great ways of earning money though and without it being too easy.