Yes. 40k in the Rogue Trader era and blending into the background given in the 2nd edition books. I enjoy it and am looking to maybe kinda doing some gaming of some type on Helsreach.
I like the Halo background, but haven’t been into it since Halo 3. The Fleet game from Spartan should/could have jump started my interest. Alas, the assembled models sit on my painting table.
I also like GZG’s “Tuffleyverse” background for Stargrunt and Full Thrust. And Hammer’s Slammers. And Vata’s War. And the Honorverse.