A champion who needs changes who i never see talked about
Mundo.
What is his role supposed to be?
Juggernaut.
Tanky DPS.
Unlike Darius, Garen, Skarner, and Morde - he's actually seen a lot of competitive play as a tanky DPS champion as well.
Mostly due to insane jungle clear speeds with his base damages.
(Riot did mention Nasus as a juggernaut in the juggernaut update)
But he's a slow-moving, hard-hitting, unshakable behemoth. He goes where he pleases.
He's supposed to be the regen tank but zac does it better. He has no hard cc, he scales off of nothing, and he doesnt even get that thanky till late. He also is very easily countered by nomicon/ignite
Mundo isn't supposed to be like Zac.
Zac is a tank. Tanky CC. His roll is initiating fights and locking down priority targets.
Mundo is a fighter. Tanky DPS. His roll is lasting long enough to kill things.
Despite both having regeneration, there end-goal is miles apart: which is why Riot bothered naming Tanks and Fighters Tanks and Fighters rather than just Tanks.
Also worth noting pretty much every fighter or tank not named Riven has HP regen on-par with Zac.
Also worth noting the only champion that can really match Mundo for regen is Swain, who is in that weird Singed/Morde/Vlad/Rumble classification of generally being a juggernaut despite being a Mage/Fighter instead of a Fighter/Tank.