Please Balance lethality

All anyone plays is lethality champs now because its clearly broken. It ridiculous that a tank with full armor build gets melted by a full dmg lethality champ in seconds. I mean at this point whats the point of even having tank champs in the game. Lethality is making the game feel so pigeon-hole because all you can play to be competitive are lethality champs (minus a couple god tier tanks like maokia). It just seems out of hand to me, not to mention is has completely shut out any non lethality build ADCs from almost all competitive play. At this point all you see is jhin and varus in 90% of the games.