One of the great things about SR and TT was map control. Seeing your opponents when they don't know you can see them, and catching them unaware.
I want to be able to see the other team doing vile, and catch them at a bad time. I want to catch their jungler jungling after a teamfight when he really should have b'd. I want the other team to have a chance to do the same to me, and for me to be aware of this and have the option to counter it.
That's all now dead. And it's just one of the major things which took the map from a focus on strategy to a complete focus on just tactics.
Please, please, please, add wards. Make them cheap, and make them last only 90s, I don't care. Pair them with an item so they can't be spammed. Make them last full duration but lower their radius.
TRY some of these options on PBE?
Yes, I know there's already vision items. They don't achieve these goals. When I see you with the new lantern, you know you've been seen. Hell, even clairvoyance lets you know you've been seen. Wards were a 1 way flow of information, but a flow that was available to both teams, and made you make a *choice*. Choices are good.