You bring up a good point about another problem Poser has.  Namely, figuring out what item of content goes with what character model.  If they could make it so that when you are working on a particular character, the library only shows items for that character, it would be great.  I know it would be nearly impossible to do for old content, but if new content had a unique identifier which told the program what it was for, as well as what it was (mat, pose character hair etc..)  It would be great.  I hate having to play scroll the library to find stuff...