Bandit mastery passive should be a built in mechanic.
I'm talking about the 1g gained per nearby minion not killed by you, not the gold on champion hit.
This would help supports a lot. The mastery could stay the same as far as gaining 1g per nearby unit death, but this would be in addition to the base 1g gained per nearby unit killed(2g total).
Just an idea to help make supports better.
P.s. What happened to that mastery that gave bonus exp when near a higher level ally? That should also be a built in mechanic.