Either bring back Stealth Wards or

Lower the Yellow Trinket CD to something fairly useful for midlaners.

I kinda miss being able to come back with two wards, drop then in the jungle, and then sweep my side for easy kills while their midlaner was roaming or their jungler was afk at a camp. Or simply being able to ward up my side with greater efficiency and safety.

Why?

Well for one it encouraged decision-making and more aggressive play. I pay 75 gold, and I have to decide if I want to spend it preventing myself from possibly feeding 300g or trying to earn a kill for 300 g. And then it facilitates aggression because I know where the jungler is more often so I can go for the kill more often without fear of him ganking.

Plus I liked being able to contribute to MY TEAM's vision while holding a sweeper. But if you don't want that being a thing at least make the yellow trinket worth taking over 2 sweepers and a bunch of blues.