Maybe there needs to be a way to use space. Either peacefully (communications satellites) or militarily (space-based bombers/artillery?). I think this would open up some interesting near future options, without resorting to stuff like mechs.
I agree, a much more advanced system for dealing with satellites, other than the simple "get Satellite tech see the world", would be useful.
My ideal for Satellite would be alll Satellite "Units" would be in a Box you could view in the Combat view. Each turn, each satellite unit you had would automatically perform its action either
1. Recon/Command and Control-give you a view of a random area/Combat bonus to units in that region
2. Orbital Combat-shoot down other Satellites [of civs you are at war with]/Intercept Nukes/Missiles
3. Civilian-Research/Commerce/Space Ship Production Bonuses
I wouldn't mind one more level of Combat Techs Units. With things like
Mechs (probably call them All Terrain Armored Vehicles or something..Tanks that get the defensive Terrain Bonus and Ignore move Costs) and
Advanced Infantry (Combine Marines+Mech Infantry.. for a unit with move 2, March, Amphibious, Raider I and +20% Attack in Hills, Jungles, and Forests)..
VTOL Fighter-Bomber from Helicopter and Artillery
Fusion Powered Floating Fortress- (No Oil/Uranium Requirement)
as long as they were a 'last tech' type thing.