Now that's an interesting idea, only how do you set up many p2pools and keep them decentralized?  I mean, who will run them?  You perhaps mean that each MN will automatically have their own p2pool running?.... interesting.  I'm still not 100% convinced that an entity can't have 51% of the network (someone might have that now) and we'd never know it.  I like the fact that we can have a checks and balance with the way things are now.  Security over simplicity/power consumption, IMHO