Ozzy Onya A2Z
Member
If they've gone all in on the benefits of dedicated servers, which would also mean dedi hosted co-op (and firefight if it's in the game), there's no possibility to retain p2p networking anyway.
It'll also require them to allow you to use a One as a dedicated server to make LAN possible, because that requires P2P to work without a server in the middle.
Going full dedis on all modes makes me happy. As for LAN sounds like a mixed bag.