Since they haven't talked about how the gameplay will change with PP2 its way too early yet to draw any sort of conculsions. All we saw was a few cosmetic changes.
What I really want to know is will PP2 simply be a rehash of the same sort of gameplay or will it be possible to align with a power, just do activities I enjoy, and help my power at the same time, or will it just be ABA deliveries or combat depending. Can I help by mining? Can I help by doing Odyssey style missions? Can I help by exploring? Will there be new mission types, like getting close to an opposing power's base and taking photos to provide intelligence to my power (remember photo missions from Frontier?).
Also important, will it be possible for new powers to rise and old powers to fall? Because if not, there is no point to PP at all. If there are no win/fail states, then its just the same as PP1, an eternal game of Risk, played with a bunch of Rimmer type people who spend every week doing stats and congratulating themselves on grinding all week just to take 1 star system, only for a week later to lose it again because CMDR Fred was unable to play that week and he was their biggest grinder.