Yay for tag exclusion! :D (And, yeah, I know it's a volunteer project; I don't expect instant gratification. It's just good to hear that it's being worked on!)

Question about the DW importer - I've got an account but I've never got around to backing up my lj. So it sounds like you can import more than once? Will it re-import new edits/comments on older posts? So if I import my lj now, but then don't get around to setting up cross-posting yet, will I be able to re-import new posts when I do get around to the cross-posting?

With the (giant) caveat that I'm just working off a user perspective and don't have any clue about how this actually works -- yes, that's my understanding. I've done multiple imports, and each time it seems to get all the new comments and whatnot that have been posted since the last time. I'm not actually sure how it handles post edits, but I assume it gets those too. (It also consolidates comments on crossposted entries -- that is, the next time I import, this entry will end up with both the LJ and DW comments all over at DW. But it only works that way on entries that were posted using the crossposter; if you post the same entry by hand at both places, you just end up with two copies.)