Henadic Theologian
Legend
I think it all would have been much more satisfying if they'd stuck with the Changelings as the big bad (just made some new uber-changeling into the boss, with some connection to DS9 somehow.) I mean, I get that it wouldn't have been as Picard-centric that way, but it wouldn't have killed the previous season quite so badly.
I don't really look at Dr. Jurati as Borg Collective, I look at her as part of the Cooperative. Plus part of her Borgness comes from an alternate timeline.