I personally think the MCU shouldn't try to be as grand as the comics at first. I'm happy with the level of space stuff we have now, we don't need to go much more in-depth than we have. There's enough for us to care about planets like Xandar and Knowhere, but we don't need to explore stuff like that really, let's focus on our Earth-heroes. If they want to go big-scale, then later introduce stuff (like how in the Infinity Saga they waited a second to give us Guardians of the Galaxy movies).

I would like to disagree with Brett. They should give us more space stuff but still not overthrow the Earth-stuff.

I wanna see more of xandar

I want to know and see the origin of 'Knowhere'.

Well, we know it's a beheaded celestial. Altough, even in the comics it doesn't have a definite origin.

If they're going to do more space stuff, I hope for a properly done Gibborim-Xarta War.

I want marvel to explore the planet in runaways.....karolinas fathers planet

I don't know the name of the planet...

It would be fun because we have not even seen the planet

That's Gibborim. Xavin is from the planet Xarta, and the two seemed to be in conflict, hence me wanting that war done a bit more properly