With the power set of a Kryptonian (super hearing and super speed) all teams in Marvel would hold you back.
We saw that with the Sentry. Spider-Man is like "wanna watch a movie?" after a fight and Sentry has to decline, since he hears people screaming for help in another country and then jets off.
I'd go solo for a while and befriend the likes of Reed, Black Panther, Pym etc. Use super-intelligence to analyze and take some of their tech. Build a makeshift fortress of solitude somewhere off-Earth. I assume I don't have knowledge of the kryptonian technology and there's no common omniverse, so I wouldn't really be able to create phantom zone projectors, for example -- but I'd get by given I'd be exposed to various things, perhaps even improve on some.
I think I'd keep it on the down low how powerful I really am [telepathic inhibitors would probably be the first thing I'd create] -- though Reed and whatnot would analyze and deduce it, but being friendly wouldn't press it. I'd sweep in every once in a while at super-speed against various villains the Avengers face and leave before they can even know what happened if it really goes bad, but generally I wouldn't want to get involved unless it's highly necessary. I'd really use tech as much as I can and cosplay as Iron Man-lite [robot army and the whole package], without them knowing there's a ridiculously powerful being inside all of that.
And, of course, double team She-Hulk with NemoBro.
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“Perhaps this is the ultimate freedom. The freedom to leave.”
I’d join the Avengers and get Tony to help me design a solar suit. I’d then find a way to get the Starbrand to nullify most weakness exploitations thrown my way. Have to have a woman, so I’d team up with Carol Danvers as often as possible. For a job outside of the hero business Superman has the right idea. His job gets him close to all of the action.
Go work at The Daily Bugle.
With Kryptonian powers I can get, or fake, the juicy scoops about Spider-Man JJJ craves.
Or join the She-Hulk, either or, I duuno.
I'll ask Reed to give my powers to ABHI and transport him into an adamantium enclosed ring with Grey Hulk so that we can finally get proof that Hulk is > Superman