Yeah new ships, i mean 3 new factons in rebellion, not really, just same ships different titan and different faction stats. i feel like the company took a shortcut with the new game.
Well to be fair, even games that I think did this better like Command and Conquer Generals: Zero Hour, only added a handful of totally different units (say 3) per faction. But it was enough to make them play totally different. I too have made each faction have frigates with different stats or abilities, but there is only a few guys like Maelstrom who are really good at making models from the art style of Sins. That's the main barrier I think, who wants to add totally new units if they don't look or fit in as well?