We're currently partnered with /improve/ and /8lounge/.
I suppose we can try and get something going with /fit/ and perhaps a few other boards.
I don't like our chances with 4chins though, because last I heard people got banned for even mentioning 8chan.
I guess, like other people have mentioned, the whole 4chan drama didn't really affect /fa/ that much, so there wasn't really a reason for people to leave. The number of active members is increasing very slowly though.