I've posted before about games I'd like to run, and games I'd like to play.
Here is a new list of games I'd like to run. I doubt I'll ever get to do most of these, but it would be awesome to do so.
1) Star Frontiers. I'd like to run a canonical, non-modified, no-supernatural powers or extra races SF game. The system is good enough, although these days I'd probably consider GURPS. My dream campaign would be to run some city-based ferret-out-the-Sather-spies game that leads to some of the published adventures - not necessarily the Volturnus modules, but probably Sundown on Starmist. I'd love to see it go through the 2nd Sathar War (SWII) with the players running the UPF, followed up with the post-SWII modules involving Sathar space. I just think it would be such a fun game to play out. My gamers would need more time and include better wargamers, though, or I expect SWII might end as it did last time I played it out solo - not well for the UPF.
2) AD&D. I'll run AD&D again. D&D5 would be fun but more complex, AD&D even more in both directions (easier for me to run, even more complex to deal with), but yeah, part of me would love to run a full game. It's so damn clunky, though, and more fun to visit than to live in. But there is this strong pull to go live there on a weekly basis . . .
3) Dungeon Fantasy Gamma World. I think this made the earlier list. I still think I need to do this - dump DF characters into my version of Gamma World. The PCs in my DF game are convinced despite evidence otherwise that they visited The Warden. Why not really do it? GURPS is the perfect engine for it.
4) Gangbusters. This is something I could run as written, no problem. But GURPS also has the Adventure Guns series. I'd probably try to mashup the earnings and money from Gangbusters with GURPS and run it that way. I still remember the combat system well - Basic Combat has a Thompson burst do 20 wounds. Trivia I remember.
That's what I'd like to run. 3/4 of them are GURPS or could be.