God forbid Sins turns out like Starcraft- several years for a sequel.
And what would be so bad about that? After all, on average, a sequel takes either-
1) 1-3 years to come out, taking the time from when the game stops being supported
2) 2-3 years, taking the time from when the game first came out.
Blizzard may have taken about, what was it, 15 years, to get SC2 out, but I have no doubts that Sins-2 would take less than ten years to release.
And most of that time would be other projects from Ironclad, that are almost certain to be awesome.