The picture of the nuke looks nice. Also a few questions:
1. For the ghost launch ability, does he automatically summon the marines even if they haven't been built yet or is it merely a recall like ability?

2. Thor will be able to move right? He has legs but since hes built by SCVs I thought it might be a missile turret like unit.

3. I don't really get the Sensor and Radar Domes. Are they like comsat stations or are they something different?