[Call me when humans go extinct]

Since the pug system has been updated, I would say it will be a good idea to give effect modifiers to the map votes and buddy system for the pug servers as donation perks in order to encourage people to donate.

For example:

Donors' vote on map votes will be counted as 2 votes instead of one.

Donors' buddy/foe effect will be modified by 1.5 times. Of course RWS differences should still be lower than 4.