I don't think Mourn can bring back the chat because he doesn't pay for the forum (I still assume Feld0 owns it) and chat is 20 dollars a month or year I believe. So Feld0 would have to be the one paying for it if he still owns this site.
The best I can do is set up an irc for you guys, but it seems most of the users here are lacking in the knowledge of how to even use them.
IPB chat is out of the question, as Feldo has said (several times) that he would not bring it back after it is gone. Other chat systems like xat and chatango are garbage and I would refuse to link those.
I'm not setting up a Skype group, but one can be set up.