Yeah, I've been reading and watching this on and off today.
I think they should've worked on more development individually of the replicators, Wraith, and Ori before clustinging them all together. Then again, I suppose, with the original series going 10 years and the other still going, they've had quite a bit of time. I haven't followed either since the beginning, so the timeline is more difficult to follow than, say, ST:TNG.