(This is also an issue on kitpvp) Support, most of the people on kitpvp that are good have ranks and it's unfair to the other people who don't have ranks. Maybe there can be two standard kits even if you don't have a rank. One would be like kit fight and the other would be like kit special but with a sword or something, but the cool down is longer.
I disagree with the cooldown being longer, that kinda defeats the purpose...but I agree, if you have too many Titans or Gods on it turns into OPPvP, because their kits are waaay too OP, it gets too pay to win-ish...also for Factions if you buy a rank you get free Prot >3 and diamond gear throughout.
Support, because if you royally suck at PVP (like myself) and you do not have a donor rank, it makes these games virtually unplayable. That is how I landed in Prison and never really left. It took me awhile to finally get a donor rank but by that time, I was so immersed in Prison that I never went back to try the other game modes again.