Then to play that scenario out...will it be Thor?
He knows who made the gauntlet, and lets face it, IF Loki and all the Asgardians are gone and not effected by the "return" what does he really have to live for?? He has claimed Earth for his protection, would that not fit?
It would also allow them to go to one of the other stories on Thor and reboot the actor - do Beta Ray Bill or the female Thor for a few movies....
just spit balling here....
I still think the key is we are basically back to the original Avengers. So there has to be some tie in with Hawk Eye or pull in as well
Thor is a possibility. It has to be someone on that level to be able to live long enough with the Gauntlet on. It can't be Tony. The Infinity stones would disintegrate him on contact. Thanos is a Titan. That's why he could wield the power.
Thor or maybe Captain Marvel might try. Or a new character we haven't seen yet like Adam Warlock or Silver Surfer.