I don't see why we need this when we have discord already.
Discord is out of character and not everyone wants to have yet another account in yet another service...
That said, how would the devs feel if I tried the following experiment (suggested by Behemoth really):
Make an IC channel in a discord server for roleplaying purposes, where people can chat IC in a setting previously agreed on, then paste the whole thing in an RP message and post in game? It doesn't address any of the issues I would want to fix with IC chat, but, still seems slightly borderline so I thought I'd ask.