I'd be pretty shocked if any newly invited/promoted clubs (e.g. Rangers being the one folks seem to be betting on) got anything but GA. For them to be placed in Aspire would sound like a big nothingburger unless I am thinking about this all wrong.
Current GA clubs of course don't have 15-20 girls lying around on the cusp of GA-level but a little better than DPL. Their current DPL teams are going to be who form Aspire, and then they will regenerate DPL with NPL/Flight 1/new recruits (further diluting Socal's older age groups). If Rangers were to be "promoted" to Aspire, they would be basically be playing against all the same teams again, and that is certainly not what they were led to believe the next step would be when they joined DPL.
I could see the pathway described above coming into play at some point - but to do it this year wouldn't seem to make sense. That said, while I am not of course an insider, I am sure anyone who was a part of the SD Force girls program could have a few things to say about the path...given they were not promoted to GA while City got a second team not too far away.