It should be noted that DW isn't intended as a purely fannish project! They want a diverse userbase with fannish and non-fannish and all other types of people as well. (I'm doing some dev stuff for them, & I'm only borderline-fannish; mostly my LJ is for personal stuff & I keep another one for fic.)

Although in my case as well I suspect that my known-IRL LJ friends are probably less likely to be bothered to move over; having said that, I don't think fandom is the only subcommunity on LJ that has issues with some of the ways LJ operates these days!