If we start work on the infra side today, as well as growing the support side in FMF and MEPM, plus a training plan, we might be able to sail 4 eventually. We currently only have jetty space for 1 or 2 per coast, and a single sub in EDWP will eat up more resources than multiple CPFs.
Maybe just easier to have dedicated sub bases for this plan outside of Halifax and Esquimalt actual, and just have dedicated submarine support side instead of matrixing a lot of people onto a core.
It would also need a huge injection of money on top of the growth that will be needed for CSC.
I think this is almost a political poison pill that they are throwing over the fence assuming this will become a CPC problem they can snipe on them for, but maybe that's too cynical.