Regarding donations:
Powers given for donating is a fine line to walk. You need to have enough of an incentive to motivate donations, but you don't want to give abusable power. One alternative is pointshop items, but that again runs the risk of granting over powered privileges. Right now we obviously don't have many pointshop perks, so I will reserve judgement on the balance of that for later, but I think it is important to keep in mind. I like the point bonuses that the VIP ranks receive, I think that is a fair way to keep reward in check. To really make it more attractive, however, we need more pointshop items to buy.
Regarding Private Weapons:
I'm curious as to how you plan to implement "Private Weapons." Are they going to be like the original customs for TTT-FUN? I suppose their balance is really dependent on what functions you make available. Customs were the primary source of income for TTT-FUN (at least towards the end of their life cycle), and so I'm interested to see what role they end up playing here. Do you plan to make them sell-able for points? Considering increased point production for VIP ranks, that could easily be an incentive for more VIP purchases, but I'm not sure what effect it would have on point inflation. I'm familiar with the huge prices that customs went for on TTT-FUN, and I think that is part of what killed customs.
What it seems to boil down to is this: I'm excited to see how all this plays out, and will be offering input if it is wanted.