Wait a sec... Are you telling me Thanos is trying to obtain a device/ability that will give him omnipotent power?
My God, I'm on the edge of my seat here.
Yeah, what the fuck.
Two guesses?
He won't be able to control it, in the end, and lose his omnipotence and then learn a valuable lesson by the end of it.
And then, when they want to use Thanos again in the next movie after his big movie, they'll let Starlin write another Thanos story and Thanos will be retconned into thinking the Phoenix Force was beneath him, and he let it go willingly, while thinking it had taught him something.