More ways for utility supports to go back into the game.
Overhealing I'd say some champs would need a bit of a nerf (soraka/nami) if this came back. Aery for healing is extremely lackluster when playing into bursty set ups.
A cleanse like effect / shield summoner spell I would like to see this in the game, I hate how cleanse ONLY blocks CC, and doesn't provide anything else (team wise)