Crazy Idea to Incentivize Warding.

What if there was a small (something like 1 gp5 or even less) passive gold bonus multiplied by the number of wards you currently have on the map? I think the yellow trinket is down for 60-120 seconds, so that ward would be worth up to 24 gold at most, worth less than a minion and a half.

Realizing that it could be abused by putting a control ward in fountain early game, but that's about the biggest issue I'm imagining right now.

Might be a horrible idea, but seems like something that could help supports out on gold and help out the whole team on vision.