Fam, I haven't had any problems with app at all. My brother had an issue logging in, but he didn't realize the password was case sensitive and the iPhone makes the first letter capital by default.
I'm saying VC makes things more sim, because you actually have to progress to get things and it forces you to build a more realistic player or GM. I do agree there are some flaws in the implementation, but I think it's a decent foundation for progression.
You're a GM, not a coach. I don't know of any GM's that set the rotation, so it's a coaching upgrade that you receive for playing one game. Do I think a headband should be 1,200 VC or a pair of Jordans 7,500 VC? Of course not. But do I think progression being tied to VC is a good concept? Yes.
Replay value may be there for basketball lovers, but to hold a casual user's attention, taking 5-10 seasons to max out your myPlayer or myGM can work. Gives you a goal to maybe buy the franchise or purchase the private plane. If you want to be a 3 point marksmen or a typical slasher that can finish. But if you don't have the time to progress in these modes over multiple seasons as intended, you now have the option at buying accelerators.