Master Yi is better than Rengar, therefore, Rengar should be buffed

Rengar and Master Yi are both dive/delete-the-carry-type champions who get massive power spikes at level 6.

Master Yi's Highlander and his kit is way better for killing multiple enemies. At 2+ items he has the tools to kill 2+ enemies every team fight with his Q resets/outplays and his broken AS procs. Rengar however, can only shoot down 1 target and then he has no tools to outplay anyone else and will just die soon after against a competent team (unless his team smashed the team fight).

This seems kind of unbalanced because Master Yi seems better. As more and more items get build, Master Yi outscales Rengar even more.

Now its supposed to be balanced because Rengar has a "strong" early. Except he doesn't.

He can't do anything except around bushes. Therefore, Rengar cannot effectively Gank pre-6 unless you're against a team that has players who doesn't understand how he works. This isn't very good design.

Hence he only has the appearance of a strong early, but not an actually strong early...

...

TLDR

It follows that Rengar needs to be buffed. Otherwise Master Yi is just flat out better.

Rengar can't do anything early. Once they both hit 6, Rengar can go in and 1 shot 1 person (then die), meanwhile Yi can do the same thing except his kit allows him to cut down 2+ targets with his resets and dodges. As the game goes on, this disparity in firepower gets wider and wider...

So why pick Rengar?

Please buff Rengar thanks.