There's plenty to like in IDW and a lot done better than Dreamwave, but the fact that it's so fan-friendly makes it a bit inaccessible to non-fans hurts it's chances of going on forever (as I'd like!). Dreamwave had two limited series before the ongoing which only got axed because of Pat Lee's dubious business practices.

The Mosaic confirms (some of) what happens, which is spoilerific. We know certain plot points now, although not the specifics. As I said I think the timing is bad and should have come out after Devastation #6.