Warding Incentives

I noticed that Riot is thinking about removing the cost for upgrading the trinket. While people will certainly buy the upgrades I am not convinced it will address the issue of people sharing vision control. I've played many a game in which people do not ward at all even with their trinket. I know because I main support and vision is a big deal when your support. It'll often be 3 greens and 1 pink...I'll look at my ward cap and sure enough all mine. I return to base often just to refresh my ward count and re-position wards for whatever objective we are working on. I sometimes suggest players use wards and they promptly do and then after 1 maybe 2 uses of their trinket and then stop warding unless I hound them about it (normally get flamed at this point that vision is my job, in which I drop talking about it).

I was wondering if Riot has given any thought to rewarding players for warding?

For example

Gain 5 gp each time trinket is used (10 for upgraded pink version of 5+5 for the two charges) and 1gp/10 sec for each active ward from a SS?

It wouldn't have to be a lot but can add up over time. I was just thinking it could be a really good way to reward and encourage warding and then people can really tell the good support from the bad when they have racked up some extra gold from warding.