[SurgeonX]

I don't see the Sanctuaries themselves as being the problem, in fact they were one of the coolest things I remember seeing when logging in for the first time. Granted, this was at the height the population spikes, but witnessing hundreds of vehicles and infantry organising for a push really enforced the epic nature of PS that makes it so unique.

IMO, the problem was simply the awkwardness and the length of time it took to get everybody organised at the Sanc.
Sitting in a Galazy for 10 minutes because some players were selfishly chasing those last kills wasn't exactly fun.
If there was simply a platoon based instant recall, coupled with instant spawning and manning of vehicles, then you'd be ready to go in a minute.

Hopefully they've considered not just the location for these new staging areas, but the problems around organising everyone too.