"Now that the game is in a decent place

So you are generalizing player's character judging by the champions they play? Damn that's some study i'd wanna read up on, except i doubt you have anything other than your own emotion to prove that

Besides, how does gutting them have anything to do with the behaviors of the players that play them?

If riot guts those 2, most likely the players you are talking about will pick someone else and be toxic and cancer on them.

Ya great, their kits are awesome, but THEY DON'T WIN. What else matters more than win? please do tell me

You rank up not from your KDA, you rank up from wins.

Lee, you NEED to land your Q to actually do ANYTHING. You need to position right to kick in the right direction. You need wards in order to be mobile. If you are scared of him so much, buy a ward or two, he won't be able to do much.

Zed, safe poke? Melee champion with a skill shot. Fine, if you say the shadow allows him to poke safely, it has an incredibly long cool down early levels and basically denies him any sort of escape if it's on CD. His ult is literally nullified by Zhonya's.

I can agree with your point on good kit, but both champs are easily countered with the right tactics and mechanics.

What else tells more about a champion than win rate when both are so commonly picked? The below average win rate basically means more than half of the time someone picked Lee or Zed, their team loses.