I would be fine with this idea if you were only allowed to team with people and have friendly fire off when you use citizen kits and you'd only be able to team with other citizens. This way the citizens would actually have a chance at killing the op donor kits :P
I think donors shouldn't have to team, this just makes it a much worse experience for the citizens that join Meepcraft looking for a fun server but instead they get people who use pay to win kits who team on citizens... ( I know I team with people but I don't really like killing friends and I try not to attack people when they are being attacked by someone already )
I would maybe be okay with this idea if there were no donor kits or at least if they were de-buffed.... a lot.