Hell yes,sir. I am so excited for all of the new Paizo releases tomorrow. My group is doing a similar thing with Emerald Spire, only ACG. My suggestion? Make someone play a hunter and give the companion the mutant template. Think about a hunter with cyber implants, roaming Numeria with a mutant panther or something. Too cool.
This is exactly the problem I have with every game I run: I end up creating hypothetical parties in my head and there's always the shameful ghost of frustration when the players follow their own, equally awesome ideas. I would never dictate class choice to this degree, though I always nudge them in the direction of unfilled roles when needed.
THAT SAID, I do have a lot of cool ideas like that. The Brawler with Against the Technic League would make a great escaped gladiator, especially if they use that mutagen archetype (you just know the handlers would dope their fighters up with whatever they could find). A Warpriest of Gorum with Robot Slayer would probably see the so-called "Iron Gods" as affronts to Our Lord in Iron.
Oh yeah, and that reminds me: I'd probably make one exception on the class rule for Gunslingers, because this seems like the first AP that one would really fit into with minimal adjustments.