I suggest you keep away from the Vasudan tile texures and use more techie-looking ones. See what you can do with these textures:
capital03-01a
capital03-03a
capital05-05a
capital3
capital6
capvtile3a
capvtile4a
cruisertile3
cruisertile6
doctile1a
doctile3a
ftile4
install01-03a
miner01-05
miner02vtile02a
miner02vtile05a
tcov2a
tsouptile02a
vascarg2
vaseng3
vasftile02
vctile4a
vctile5a
vctile6a
Now, I'm not saying you should use ALL those textures. They're just a nice mix of Vasudan textures that look somewhat Terran, and Terran textures that look somewhat Vasudan. Pick a couple that match and see what you can do.