Well, the objective going into reissue is simply to collect the required 3450 sealstones (for the reissued girl + blooms), which can be done without even waiting for P2 to give people more time to work on the regular event/s. Likely people who will still run P2 are those who have a 3-medaling obsession like I do, or want to add stories/cutscenes to the event album (which only seems to be achieved by running the map/s at least once).