I got a suggestion which I already presented to sjoerdtim. But I will do soo here soo all can see.
1. Suggestion
Make all classes available to all players but with these conditions:
1. Normal players must pay for a class each time.
2. VIP's must pay only once
3. Pro's dont have to pay but have a cooldown on usage of every extra class.
4. Elites are not required to buy anything and neither do they have any cooldown or limitation in the game.
2. Suggestion
Make extra maps in which only donors can be a part of such as.
Pelennor Fields (After the battle of minas tirith there is isengard or pelennor, pelennor should be available only for donors) Such example can be presented on mutliple maps in which battles are more extent then shown in normal siege servers.
3. Suggestion
You could add extra perks to classes for donors on every map. Such as speed II for 2 minutes or resistance after spawning, or in general extra abilities for ranked people, depending on the level of donor.
4. Suggestion
Some classes such as nazgul can be free or bought by donors and normal players. But normal players have a cooldown on particular class usage(maybe 2 days- 1 week). Where donors dont.
Here are my suggestions. Maybe try mixing them up and making a system that benefits the whole community.
And try make all classes available for all players. So players aren't mad on donors for having classes they cannot access. ( That would possibly narrow down the servers popularity.)
What? So you want all my progress to be removed so I have to pay every time to use each class that is so dumb.Free naz with limited uses? Just no. 2 battles at once? Dontators only on one? What? Not enough donators and I doubt they would all love to play pellennor I am sure some would but just no. Like make 2 lobbies or what? Sorry but that is the worst suggestion I have seen. Free classes for everyone? Some of the fun of this server is unlocking everything and being proud of having everything. Also donators don't get huge of advantages over getting classes I mean they get more points per day from bonus but thats it.