I vote for an EFS remake too. AT, you should try it out; it may not be everything you mentioned, but it is a good approximation of what seems to be the gist of your request. You can battle it out on land, in the air, on the water and in space,
and you must manage economies, morale of both troops and civilians, you must supply your soldiers, keep an eye on production and consumption of resources (you need your Monopols as-is in weapons production, but you must also sacrifice them in Singularity production, without which you are utterly incapable of building spaceships), manage diplomatic relations with four other Houses, the Merchant League and the Church (which, on a side note, is based on - no kidding - Holy Terra), all the while jockeying for position to become Imperial Regent and eventually Emperor. EFS is certainly one of the few games that to me are worth more than most of the rest of the market, simply because it is what it is, a combination of economy, diplomacy and strategy, which are all delicately intertwined.[/rant]
Emperor of the Fading Suns
You could also wait and see if Spore is something for you.