On the list of things I'm a complete and total sucker for, outer-space westerns are up at the top of the list, right under comics about Batman punching a gorilla or crocodile. I love those things, and the more obvious the connection to westerns, the more I tend to love it. Cowboy Bebop? Great. Firefly, with its train robberies and galactic civil war veterans? Yes. Heck, I've even got a passing interest in BraveStarr, and that thing is so on the nose that it takes place on "Planet Texas." Seriously, you put cosmic six-shooters and I'm basically in, no questions asked.
Of course, it helps if the end product is actually good, too, and while it was the premise and a quick look at the art that got my interest piqued in the first place, Matthew Ritter and Adam Elbatimy's Nova Phase is every bit as good as I wanted it to be.