I'd definitely help out for sins2 game.
we need 64bit mechanics (far fewer 32bit players now then a yeear ago),
better multithreaded engine and AI.
3rd dimension - homeworld way?
coop modes - emperor, admirals, commanders...in one team, and same other team.
That when done good would bring pure awsomeness to the series.
New single and coop campaign. Even multiplayer campaign?
I think stardock could pull it off.
Add a bit of tactical fights in RTS on planets, reduce and punish use of superweapons, make huge tech tree that noone can reach during normal multiplayer games, add a chance/race specifics into tech trees, improve diplomacy and binding agreemens in it like territorial and area opf control agreements, bring a bunch of resources linked to technologies, like Endless space has, add intergalactic and system trade markets like Hearts of iron and EUniversalis have,
add genetic manipulation into tactical units development,
add new races, thing David Brin's Infinity shore books or something,
add living ships, stations, (Thinking like Hamilton's Neutronium Alchemis saga http://en.wikipedia.org/wiki/The_Neutronium_Alchemist)
diversify races and add genus of races, so that intermingling can be possible and enabling races progress if geneticaly manipulated by player,
space monsters and random fenomena
more exploration (get us to the point of no return if like dwarves we "delve too deep...." awakening a space biatch that hunts all of our race to extinction),
add non playable NPC monster race like Antarans that require all players coop to kill even if it's a FFA multiplayer game - or they all die.
Add unstable space lanes as natural phenomenon, add lanes destabilisation engines, add planetary fight options - shields, phase rellocators, arcade (for coop MP) orbital cannons and fighters....
Gawd, I can't stop dreaming, can I?
Stardock, we love oyu.