0% fees and PPLNS earnings. (The tx fee is not paid out to miners for maintaining cost and the bonus for our engineers.)
This is not possible on the existing p2pool share chain. Every p2pool node would have to upgrade(?) to bitmains version.
Even if it was possible - it's not a 0% fee if they take the Tx fees......

But like you say, it's just not possible. They seem to want to be going into direct competition with p2pool instead of promoting it. How will their version be able to work with p2pool like they say if it's using a different share chain? It can't.