Pretty much every corner of LJ has been on the decline for several years. At this point, there's only a handful of journals & comms I follow that are even still active over there, so as long as those few active users move over to DW, I don't think that we'll actually be losing much by moving. It's definitely sad to say goodbye after being on LJ since I was a kid, but since we seem to finally be transplanting ourselves all together, I think we can hang on to our sense of community and make it work.