Though I bought the book, Alternity seemed to technical to learn. Seems kinda dumb, they must have known that 3ED was in the works yet the made a whole new system that is not compatible with anything but itself.
Star wars uses the 3ED rules so the D&D peeps can bring their fav characters to bare against Darth maul and the rest.
It may be the system to use for FS RPG.
There is another system out there called DRAGONSTAR. It mixes both technology and science and has good 3ED intergration but may not be as suitable... Just thought I'd throw it out there.
It's a thought provoking idea, FS RPG. I like more hands on action though for my space combat.
How about FS BattleTech Crossover. Instead of dropships we got carriers? LOL
Nothing like an 18 hex charge in veritech mode so my fighter can crash land mostly intact but my victim's mech gets hit on the upper table (ie head)... Baboom baby!