Relic Entertainment.
Though I already own the Dawn of War series, Company of Heroes and Homeworld: Cataclysm & Homeworld 2...
.... I`d kill to be able to buy the original Homeworld from their Sierra days. I mean, considering Relic owns the Homeworld IP again after purchasing it back from Sierra, it's not like Sierra could do anything to prevent it being on GoG anymore.
If only Cd-projekt could convinces THQ to bring that game. I miss the epic space RTS story ;.;
I mean, Cataclym`s factions were kinda original, and Homeworld 2's multiplayer was quite solid.... but of the three, it was the original that had the best story ever(I still recall when you return to Kharak, only to find your planet burning all while Samuel Barber's Agnus Dei is playing in the background... ingame. Most atmospheric moment ever).