was positively surprised when I picked up Xenonauts and immensely enjoyed the old school equipment screen etc.
would buy either variant though I somehow would prefer a continuation sequel
(maybe the second invasion fleet destroyed a lot of the infrastructure of the earth defense forces when arriving, explaining why a lot of stuff has to be researched again?)
whatever way you decide to go, I personally would just like to see more options for everything
bigger tech tree
more weapons, ammo types and armors
more psi
more enemies
maybe some special quirks or skills for soldiers to earn?
etc etc
anyway I am quite confident in your ability to design another great strategy game and as I said am quite welling to throw some of my money in your face in exchange