I don't know yet which one to choose. both may have interesting things.
efnet :
+ no resources needed, already in place.
+ same place as others #xxxtemp channels, one server, one nickname, multi channels
- no nickserv or services
- no controls for mods
private :
+ new services and flexibility for moderators (Ircop)
+ possibility to link nick to the forum (and no more need to connect once every 31 day to reserve nick, it could be always active)
+ possibility to interact with the forum (irc forum), to display nbr of users on irc, names, new dumps, user is actually on irc, etc.
- new independent server for irc only ? I don't know if it can be hosted on current forum's server.
- resources needed ? maybe 2 servers in case one of them just split or disconnect, 2nd one is still online while 1st reconnect.
- only official #Temp channel (net) on the server, and other #Temp on efnet ?
- technician needed to maintain the server online and working (Narin will do it alone ?)
Private has more Negatives, but I think positives are great improvements.
I'm for moving to the new one (even if I don't come often).