Should Mundo have a Taunt?

I don't know, it just seems like Mundo it a little bit of damage, plus a meat shield. And Shen is a meat shield, but he's a meat shield with a taunt. Why can't Mundo have one? Maybe change his E to a taunt? I never liked that AA buff anyway, always seemed kinda useless to me besides a little extra punch. Like I get he does 25% current health with his cleaver, and AOE, but really I think even if that was nerfed a little being able to be a really viable meat shield would be better. Generally what a tank is anyway, right? Meat shield and sometimes CC, sometimes health percentage damage.

I mean, think about Gnar, he does 6-14%(or more, depending on whether you build any AP or not) max health every 3 hits and also has CC, is huge in Mega Gnar form for a meat shield, has a team-fight changing ult plus an AOE stun, and when he's not in Mega form he can poke better than Mundo with his AA's and W, and honestly it just seems like he's better in every way.

And for another example, Sejuani. She has two initiates, she's generally tanky, she's big for a meat shield, she has %maxhealth damage and AOE, and tons of slows plus her ult for AOE stun(one of the two initiates).