Hey there. No idea which server has the largest population, but I've continuously heard that after recent server merges they're all pretty balanced. I personally was on Shiva as well when I originally played, at PC launch, and I just restarted on Cerberus last night. If you want to join me in starting from scratch, I'd be happy to have someone to go through the early grind with (maybe I even remember you from Shiva) and I believe I have a helpful LS lined up as well that I just need to retrieve a pearl for. If you decide to roll on Cerberus look me up as Craine.