When Ps3 players comes in, each city will be full again. Just like it was in the beginning for us. SP will most likely come from grinding mobs like it did went we started. As PS3 players level they'll come to us for advice as to where grind spots are or find new ones! As far as i know, there's nothing to grind in BW....

Even though Dungeons provide SP from the looks of it we'll have limited access.
This will in turn cause players to hang out closer to these grind spots (In Grid, Limsa, and possibly quest hubs by then)
If you pay attention to the steps the devs are taking, you'll find that they are make these changes for the PS3 release.

Grind spots baby. Just like the good old days