Well that's an unexpected thing for you to imply about p2pool ... ... ...
Of course centralized solutions are more efficient, you don't need jtoomim's fork for that.
Yep people do it all the time with the main p2pool fork

You have no one else but you mining on your p2pool?
I hope so, otherwise you are running a centralised p2pool ... controlling all those miners mining on your p2pool ...