I have been playing SSE since it was first released, and bought each expansion as they came out. One of the great things about playing Sins through its development is that I got to see the different intro's for each expansion. This really expanded upon the game's lore, and made it feel like the story was progressing and changing. So one thing I have always wanted to see from Sins2 is a real campaign, where we start off by only using ships and then work our way up to buildings, and then the full game. This would make the game feel so much more alive, and give the players so much more to do and experience than just play skirmish's.
(also, release each every game/expansions intro to youtube please)