What I'm getting at is, people make a sci-fi game and then forget it's sci-fi. Don't be a wuss, give the player something awesome to do. I'm talking about CONCEPTS. Exterminatus is for small-minded pussies. I want Death stars running around destroying stars leaving stellar debris. Vacuuming up nebulae and regurgitating them elsewhere. Sucking up stars and making incredibly dense warheads out of them, then launching them at other stars. Reversing time flow after a battle went horribly wrong. Creating a device that transmits rays which slowly kill everyone in the galaxy except your own people. Engineering an Alien-style creature to fight for me, then laugh maniacally when they break containment and slaughter colonists. Create sentient robots to wage war instead of my troops, then go "oh" when they declare their own nation. When all else is lost, and the enemy is bombarding your capital, creating a huge black hole that will implode the entire galaxy and taking everyone else down with you just because you're a prick.
But on the less explodey side, there are other problems in 4x. You only ever get to research techs, build ships, colonize planets. That's nice, but lame. You should also get the chance to play a Chaos-like empire of space wizards from another dimension, able to build temples where your worshippers can hate your enemies to death remotely over parsecs of empty space. Or I don't know, playing a Nid-like locust fleet without having to conquer stars would also be nice.
Give me your most outrageous ideas, /tg/. I may not have a team of programmers on my side, but I have my trusty computer, my intimate knowledge of c++, no girlfriend, an endless supply of beer and Cheetos, and a month ahead without exams. Let's get this shit on.
Oh and I was serious about the throne of skulls. If there is one thing my game will have, it will be the fucking throne of skulls.