I own SMVE and have no interest in moving it. SM is an all time classic pinball game.
I just looked at picking up a GOTG and did not feel like it was “there” yet. If it was even close to Iron Man level it would have been in my basement literally yesterday. It was really rough out of the gate. Because of this it is not an easy sell right now so be sure you really like it before you sell a game you enjoy to get funds.
That being said GOTG is getting a lot better fast so keep an eye on it for sure!
You mentioned IMDN and I am like you in that I really didnt know the band, but got mine a couple of weeks ago and can’t believe how much I enjoy it. I don’t have “honeymoon” phases with pins either. I would pick IMDN all day over GOTG right now.