Yeah, I am still thinking about which name to use. I think that, at least, SSS will be the working title.
Flanaess Sector, but that was originally targeted at a more "hard" SF setting, where what we know of physics was important. That isn't a concern in raygun fantasy, so I've been looking at other monsters to include as aliens. I probably still won't include elves, since that would make things look a little too much like 40K for comfort!
I'm particularly interested in some of the more obscure entries to be found in the OSR, actually. The Kzaddich and Tsalakian (pdf), originally found in Footprints magazine (and John Turcotte's dreams prior to that), were put into the OGL when they were added to the Swords & Wizardry Monster Book. I think that they would be perfect for raygun fantasy. In the Adventures Dark & Deep Bestiary, Joseph Bloch provides an interesting creature called the "Genius Loci", which resembles a number of creatures from the original Star Trek, from various adventures of Northwest Smith, and so on. Mr. Bloch helpfully included that entry under the OGL.
All of that aside, it should be pointed out that nearly anything that fits into a fantasy world will also fit into raygun fantasy worlds. Notably, some of the horrors in Rafael Chandler's Teratic Tome are extremely appropriate to the sorts of pulp SF that falls into the raygun fantasy category.
I should write a manifesto, of sorts, of raygun fantasy.
In the end, though, all of that is pretty much background to the central theme of the game, which I will talk about next time.
Edit 4/26: I didn't get around to talking about that central theme in the next post, but I will. I started to approach the discussion a couple of posts later, when I began to lay out what, exactly, I mean when I say "raygun fantasy".