Ok, so ignoring the "What if?" issue (lets just assume it never happens), and the recent Spider-verse story line (which I hate, because it just seemed like an excuse to kill spiderman over and over again, and we all know how much marvel hates spiderman right now for some reason) where Cosmic Spidy is killed by Solus, what if spiderman had kept his powers and the world didn't explode from it.

How powerful would he grow?

Who could he tango with?

How powerful would he be as an Avenger?

Would he even be the same Peter we know today?

What would happen to his villains?

And anything else you guys want to discuss.

He is already so powerful that he doesn't need them.

It'd be a cool concept to see in action. I liked the Cosmic Spider-Man in Spider-Verse. I got the impression he was a very mature Peter Parker who embodies a Superman role. If anything I think he'd play a bigger role on the Avengers.

in this form peter would be a cosmic being. He would probably act the same, but he would capture his rogue gallery with ease. and I doubt he would need the avengers.