Woody
Regular
I think it is a good system as it is but I do support having to pay to upgrade them based on the increased pay rate. Even if you simply give them one extra pay it would make it a more momentous occasion. I don't think there would be any problem with being upset when they upgrade because you can always choose to leave them at whatever tier they are at. Basically they are maintaining their own gear from the loot and they weekly pay but perhaps one extra paycheck as they go up will make it slightly harder, or at least make you think about timing a little more. It's only a small change and really, thats all thats needed.