Fantasy Dune - where the concepts of of the "galactic empire" are condensed down to a single continental mass. The center portion of the continent is a vast desert where the only source of magic (Spice/whatever) can be found. There will be houses, vying for power, each with their own "schtick", there will be powerful neutral factions, and Big Fucking Sandwyrms/monsters.
Space Commando Death Squad - The PC's are members of an elite super-lethal commando team. Their job? To kill and eliminate "problems' with ruthless efficiency across the stars working for various dictators, autocrats, cults, Space Presidente, Councils whomever, that needs the dirty deeds done, with the usual political hijinks that comes with it. High-lethal action, little bit of horror, little bit of comedy. High-octane.
Glorious Bronze! - Full on Mediterranean fantasy, bronze-age glory, gods, giants, titans, monsters, city-states and kingdoms, with mythic analogs of the Mediterranean nations and ancient empires beyond.
Riftwar - I've been wanting to set a campaign set in the pre-Riftwar world of Midkemia (Raymond E. Feist's novel series) for years. It's a bog-standard kitchen-sink fantasy world on its own. And I wouldn't mind going to their Tekumel rip-off world of Kelewan too.
MiB-Com - MiB, not the movie, not NWOD, but a serious organization dealing with a potential alien-invasion in the making. That means technological scaling (using and repurposing alien tech), psionics? Bio-mutation? Corruption? Base operation using Domain rules? Yes to all of the above.
Road Warrior - Yep a straight up translation of all the Road Warrior Lore then turn it up for full domain level play using resource gathering as the prime driver (pun intended). Time to raid the Bullet Farm my War Boys!!!! I plan on using modified Savage Worlds chase-rules for extended vehicular man-slaughtering over-the-top action. But I'm eyeballing Cyberpunk Red's new Interlock for this.