Buff Gold Income gold gain
I'd like to see gold income provide as much gold as a player that can hit 100 cs by 20 minutes, provided of course the support uses the gold income effectively. I'd also take into account the Bandit mastery too, so if you're around for all 100 cs you should get the gold gain for each. Why do this? So your support can get the gold they need if you're in a match with not a lot of kills involved, and you can run off a good farming teammate.
Good use would ammount to almost 100% cooldown time on the
set, and the
set, and being there for all the cs gain from the
set. I'd say you need teir 2 to get enough gold gain, as such teir 1 is weaker so the comparable gold gain would be enough.
Another reason to do this would make a gold income for a future meta shift of duo lanes where both players get cs and noone loses out on gold. It could happen...