Let's try to make an analogy.
What's the difference betwen p2pool1,p2pool2,p2pool+ltc+segwit and bittorrent,utorrent or bitlord?
Is that you can change the torrent client and you don't loose your file.But you can't change p2pool chain without loosing
your work.
So don't play with miners work and time.
Pool operators should be interventive people,open to new ideias and forks and not open to chaos.