Nameless Thanos thoughts
Massively powered Boss with no other fights on map (so even 3*champs can get to him).
Giving away 3* Avengers that get Infinity Stones with massive powers..
I don't think Kabam has forgotten about Meme tier summoners like myself.
They found a way to challenge their most talented players (beat it now) AND provide for the casual players (beat it later).
Pretty brilliant if it works out that way.