I don't think Ultros will be the most populated server, but I do believe that it'll hold a nice population for a good, long, while. At the very least, Ultros will have the damn finest community in the game.
Edited, Aug 24th 2013 3:50am by Teracide
FFXIV: Raxion Gunsoul - Brynhildr - 50PLD 50SMN 50SCH 50DRG
WoW: Raxion - Greymane- 90 Druid
FFXI: Nion - Asura - 99 BLU, PUP, SMN, DRG, PLD 50+ DNC, NIN, MNK, THF, WHM, SAM, WAR