Well considering the FS1 briefing for Exodus says tha they estimate 4 billion vasudans lost their lives in the attack we can make one of two assumptions:
A) The evacuation effort was SUPER effective. This I consider to be unlikely, considering how tight things were for the PVN/GTA.
B) Vasuda was sparsely populated compared to earth. Considering on earth TODAY we have 7 billion people, and I seriously doubt that the PVN and GTA had the lift capacity to move 3 billion people off Vasuda ahead of the bombardment. And that would only have brought them up to Earth population for 2012. 3 centuries later I expect that Earth was much more densely populated then it is now, necessitating MUCH heavier bombardment then Vasuda Prime did. So I doubt Vasuda prime is nearly as devastated, geologically active or no.
Remember the Vasudan colonization effort was driven by the inhospitable conditions of their planet though, so I don't know if 'restoring' it is really worth it. It was never our Blue Planet
