Finally I'm home again after a rather long 3 week trip without *any* internet access. Quite refreshing indeed.
Anyway, I just wanted to check if the topic has somehow progessed (Unfortunately that's not quite the case :) ) .
Perhaps we should just keep collecting ideas and "hacks" for the next major version of danbooru and hope it will come soon. (As most ideas, like the latest pool, won't do much to tackle such a big problem at this time.) More sophisticated solutions are (in my opinion) bound to more or less major programing.
But anyway, good to be back and please keep on discussing!