If a Marvel-Star Wars world in the Marvel Multiverse is made

And a crossover takes place when Marvel Earth is visited by Star Wars characters, what era should this occur in? Should the Clone Wars be it, or the Rebellion, perhaps even One Sith....throw something neat out with some plot

They should be kept separate. Period.

Knights of the Old Republic era!

There probably be some crossovers and Marvel may be keep it separate universes.

Don't think Marvel would invade the SW galaxy. But who knows. If it works it works.

If they cross the two over I swear I will never buy another Marvel comic again.

I'm not sure if I even want this, but if it must happen, it should be the Rebellion/New Republic era.

Er, I at least see Stormtroopers invading New York, not the Avengers attacking the Galactic Senate

After infinity i would love a cross over book where it's the forces of the joint galactic council vs the galactic empire.

If it ever would happen please may it be non-canon, but better they stay apart.

The Guardians of the Galaxy would probably be the obvious choice

Patton Oswalt had a hand in this.

This. I don't want Star Wars in my Marvel Universe.

This but I fear that reasonable request won't be happening from 2015 onwards.

I don't want both universes to be connected.A crossover between the two won't interest me at all but maybe after 2015 when the movies comes out something might pop out.

Considering Disney paid 4 Billion to get it, they will try to make that money back anyway possible.

I wouldn't mind a mini cross over event like what DC is doing with He-Man right now

That would be terrible.
Technically speaking however, there is probably some sort of Star Wars like universe existing somewhere in the Omniverse.
Maybe.