User blog comment:LivesByProxy/Vision: Sight, Stealth, Detection, & Denial in LoL/@comment-24648781-20151019170429/@comment-26815373-20151019211714

TF's Ult grants True Sight, currently so does Rengar's. I'm defining Detection as 'imperfect information' that 'doesn't grant targetablility.' WW's E is a Sight granting effect, Rek'Sai's Tremor Sense isn't. You don't know who's behind that wall, only that someone is - you never see them. The other interesting thing about Detection is that it isn't hindered by s (the version I'd like to see) or effects like Graves' Smoke Screen or Noct Ulti (Denials).

My overall point was that the vast majority of Vision effects are either Sight or Stealth, and that this needs to change. The best way to make Sight and Stealth have a healthier relationship is to introduce more counterplay in the items / abilities that would grant their effects, and to play-up Detection and Denial effects. So we end up having this Rock-Paper-Scissors-Lizard-Spock scenario as opposed to True SIght > Stealth > Sight.