@RIOT make a 4th mastery tree and make it a support one
Please. support developed heavy gold and xp issues when their good old support tree was removed. Put the support oriented masteries in it since they are kinda just thrown randomly around the mastery trees, and add in some nice passive gold gen and xp ones.
This way supports get their damn gold and xp, but they have to commit to the support tree itslef to get the gold/xp.