I need some advice on my mains

So currently my mains are:

Tanks:Hulk,Rogue,Venom

DPS:Human Torch,Spider-Man

Support:Loki

So i want to add one more tank(because im a tank main,who also flexes into other roles)and there are many tanks i enjoy playing and im quite good at including:

Peni Parker(5.7 Hours)

Doctor Strange(5.2 Hours)

Groot(2.6 Hours)

But please consider when giving me advice i really only enjoy playing Peni Parker from the 3,Groot is kind of not versatile enough and Strange is kinda boring to play with.

And also i clearly lack defense with my Tanks,where Peni Parker would be optimal.

Thats all so if you got any advice i would be really happy.