Well not sure what to do about tomb kinds perhaps have less reliance on magic. But for the skavens a lot could be changed.
HG wells counts as steampunk right? can I play something akin to the martians from HG wells but a little less Conquest minded. Though they will also be a little less powerful in logistics, because of the difficulties of interplanetary transportation.
Perhaps Wherever they come from has very little aetherium, and the group that is on this planet is some kind of mining operation, perhaps they have subjugated a primitive nation to mine for them.
<Snipped quote by LordZell>Perhaps then it's the best if you cooperate with another player and perhaps collab with others.
Still, I am a bit skeptical of the success of a pure "movement" or "conspiracy" type entity being a major factor compared to actual nations.
But we'll see. Come up with a solid concept and you're in.
Still, no matter how small it might be preferable if you have a base of operations which is under your explicit authority.
Think of the mages of Dalaran from Warcraft, for example.