Would be nice if Eternity had a hybrid multiplayer system.
If -vanilla is applied, it would use the Chocolate/Crispy Doom protocol, and is completely capable of joining Chocolate/Crispy servers, and vice versa (Chocolate/Crispy server able to join Eternity servers with -vanilla)
If -vanilla is not applied, it would run its own protocol, meaning it could do whatever it wanted, whether a system that is similar to Chocolate/Crispy, or a client-server system like Odamex, ZDaemon, Zandronum, and the dead client-server branch/fork/whatever. Also, if a -boom or -mbf or an all around -complevel system is implemented, due to the ridiculousness regressions needed to support those ports (like putting in DosBox's ipxnet code and restoring ipx code removed in Eternity), it could use the new system, but have chocolate/crispy style limitations (4 players max, no in-game joining, etc)
Yes, this is all wishful thinking, and I really wish either PrBoom or Eternity would get decent netcode, or odamex finally gets a stabilized demo protocol and stabilized coop support, preferably both.