That doesn't really sound exciting TBH.
We just need reasons to gear up and use the bottom 60% of our roster, other than for Deployment in TBs.
Mini versions of Assault Battles using specific characters shouldn't be hard to come up with. Rewards don't have to be huge.
-"Cloud City Escape" - only using Lando, Lobot, and Ugnaught...maybe even calling in a Bespin Guard like calling in the B2 Rocket Trooper in DS Geo TB. Keep it simple at Tier 1 to Bonus Tier.
-"Destruction of Rebel Shield Generator" - Imperial Troopers only. The final stage is shooting a shield generator like killing the table in Ghosts of Dathomir. Almost like a mini extension of Empire Hoth TB.
-"Escape from Echo Base" - Wampa only. Simply killing Rebel and Empire troopers to escape. Maybe calling in a shorter and skinnier version of Wampa as a buddy to assist, like calling in the B2 Rocket Trooper in DS Geo TB.
-"Assault on Sandcrawler" - Tuskens only. Taking out Jawas and odd looking droids to get supplies from the Sandcrawler. Exterior environment ==> entrance motif ==> 'foyer" ==> stairs or "lifts" ==> "supply room" ==> "escape hatch".
"Defend Jabba's Palace" - only using Gamorrean Guard, Mob Enforcer and Greedo. Various Jabba's palace locations against Tuskens.
That's just a lot of simple re-skinning and modifications of existing backgrounds and characters.
Those were just easy OT ideas only. Thrown in minor variations for PT, ST, SW, and Rebels era/scenes/landscapes and that could buy a couple of years of entertainment before people get bored. Then two years from that point, add Challenge Tier 1 and 2.
Most the templates already exists, just re-shuffle and/or slight recoloring of some can work.