i guess ill throw out a couple of my opinions, after reading all the posts (geez this is a popular thread for just happening today!!)
1) as long as the people who are donating to an unbelievable extent arent pushing people around and being arses about it, i'm not too upset, however i do feel left behind and unable to catch up which isn't a good feeling
2) is it possible to add more temporary donation upgrades? that might make things a little more even - to get a certain item (non regular item, so maybe like a secondary armor like a donator helmet that doesnt add a lot but adds SOME, more than normal) you have to donate every month? that sort of addition would give donators an advantage, but nothing you couldnt overcome.
3) limit the amount of refreshes per day? that would at least hinder the ability to catch up to a years work in a few weeks. it seems like that is the most gracious problem, coinciding with the endurance that nobody seems to be able to afford to keep up with