Just brainstorming. Our heroes are on the run from Blackhole and his troops, they are freaked out. They have decided to head back to the Wheel to map out their mext move; hunt down the mystery of Stars' End. The Wheel is neutral, but before they can leave, the Empire is going to quarantine the Neutrality sphere to protect the region from a deadly outbreak of 'Gamorrean Flu', which was brought on board the Wheel by a ship that matches our heroes'. Now theyll deal with a station of angry patrons, a corrupt station manager, and a wave of Imperial "Infectious Disease Controllers" in Black Stormtrooper armor...

Anything else you would throw at them?

Inquisitors, Magna guards, storm trooper captains with rotary blasters. The usual.

Have them encounter the mad scientist seeking the source of that particular strain of virus to weaponize it.

They are no match for Droidekas.

Also, perhaps an upstart new to the field Mustafarian bounty hunter armed with laminate armor, a modified Dragon Calvary blaster and tons of "Mercy" grenades from Desperate Allies who learned through word of mouth about the players ship and decides to try and claim them even before a bounty as been posted to boost his reputation and get in good with the Empire.

Perhaps have a Hutt spice lord desperate to leave the station make his men begin sabotaging the security systems so they can slink out with their stash in the chaos to come. You could even change that to a Rebel cell looking to escape quickly as well.