I think trinkets could be more rewarding for when they do their job

Atm you only get vision control with the current set up which I know is very important but is still lackluster.

I was thinking along the lines of reduces cd by 5 sec every time it spots an enemy champion (when spotted, each enemy champion has a 15 sec cd before they can activate this effect again.) when spots a ward, reduces cd by 30% per ward : ward gains invulnerability when cast 1sec per enemy champion seen (see them 5manning baron with this ward, this ward can't be destroyed for the first 5 seconds of its life.' increases duration by 3 seconds for every unique ward spotted