[tnpir4001]

I didn't see it but I'm afraid I have to turn that one down too. Simply put, there's no way to work her in. The early scenes in 2399 all center on the Fitzgerald crew, with whom Seven is not affiliated, so her presence would have to be explained. Then when we go back to 2378, and then to 2367, she'll still be on Voyager and then part of the Borg Collective--both in the Delta Quadrant--during those time frames.

Spoiler:

Spoiler The intent is for the original version of Dr. Garr to be the resident expert on the Borg, hence why they enlist his assistance during Act Two in 2378.