These changes are...weird. Very, very weird. Visible wards that tell you the enemy team has truesight in the area? It's just...odd.
I think I still like the DotA 2 version of vision wards better, wherein they're wards that provide very little (or, as of the latest patch, 0) actual vision, but will reveal anything stealthed in their range if something else has vision there (so if you're standing around near your vision ward and something stealthed runs up, you'd see it coming because you'd have truesight within range of the ward). Anti-stealth, but with a much more limited and specific range - a range that is, rather importantly, much shorter than that of the sight wards, as opposed to the way pink and green wards have identical vision range in LoL so the one will always catch the other if they're spying in the same general area.