Clairvoyance should be brought back with the ability to see invisible units/traps/champions

As of right now, the vision is lower than before and the counterplay to stealth champions is drastically reduced when inventories are full (can't buy pinks anymore, is crap as you can't autoattack the stealthed guy, who's extremely happy to temporize even if you see where he is). Bringing back clairvoyance could be a step towards bringing counterplay to stealth champions lategame, at the price of a summoner spell. Can't fight vayne? Get clairvoyance. Tbh, I'm even pretty sure it would be far from OP, but why would Riot remove a summoner spell that's not unhealthy to the game?

Not sure how Kha/Shaco are right now, Akali might need slight buffs, but that'd be good to have imo.

Or bring back pink trinkets. Give us options. When your inventory is full, having to face something like lategame Vayne with no counterplay to stealth is stupid. She's already good enough with tumble, E and max health true damage.