WaveClear Tower Defender Tanks
Instead of having all of these support engage tanks, why dont we develop some strategic defense tanks. Give them little to no dmg to champs or towers, shit tons of waveclear, and spell shields. Also, buff towers against minion dmg. Giving this tank limited dmg to towers doesnt really do much if he just pushes wave after wave into the tower. The idea is that these guys can hold a lane against multiple opponents and push towers down slowly while the rest of your team can split or something. This role is like an anti split pusher, but it can also wear towers down with time.