To be honest some aspects would crossover quite well. The Gods for example could exist a long time ago in a galaxy far far away.
Micronauts would pop up there too.
In terms of story styles Guardians of the Galaxy is the same sort of space opera just more colourful than the OT a Naboo starfighter would fit into that film perfectly well.
Why not?
It’s not like anything is sacred anymore.
Remember Doctor Who is part of the Marvel multiverse as well so time travel, multiverse teleportation it’s all doable.