This:
and this:
Both have excellent ideas to draw from, I'm just not sure any game developer would have the balls to challenge capitalism and fascism to such an extreme quite like Pasolini did. Games and philosophy don't often go well together.
A third person/tactical shooter ala the old Rainbow Six/Ghost Recon games set in the Stargate universe where you control
SG1 would be high on my list. I don't want to be some random jaffa/marine, the appeal is in the established teams. The MMO never made sense to me for that reason. Have adventure/puzzle minigames involving alien tech or an alien language that Sam and Daniel have to solve respectively. Plenty of lore to work with from the past 15 or so years.
A space sim in the reimagined BSG universe would also hit all the right notes.