OOP: Missing Persons Alert [major Spoilers]

[aRk]

No: HPFGUIDX 62131

someone yesterday (sorry, I can't find it now), wondered where 
Wormtail was in OOP. Along those lines, I noticed the absence of 
quite a few other characters in OOP, who after GoF I was looking 
forward to seeing again, including:

1. Fleur -- brief & unsatisfactory mention in Ch 1.
2. Krum -- what's still going on with him & Hermione?
3. Bill -- see: Fleur, above
4. Charlie -- let him come back from Romania already!
5. Ludo Bagman -- did I miss something? Where is he?
6. Amos Diggory -- he was such a jerk to Harry about competing    
against Cedric in the Tournament, that I thought there were 
interesting possibilities.

Can anyone think of other characters they had fully expected to 
reappear in OOP and were disappointed that they didn't see them 
again? 

I don't really understand why JKR would spend all this time creating 
such great and potentially interesting characters in GoF, and then 
just DROP them! Maybe they'll come back in future books. But still; 
Umbridge was a good character, Tonks was okay, nice to see Moody 
again, but all those other random, nondescript aurors (kingsley 
something, I can't even remember the others). I'm feeling that there 
are starting to be too many characters too thinly explored, and a 
regrettable omission of older favourites. 

And I hope we get to see more Lupin. Poor Lupin, he's the only 
Marauder left (can't count Wormtail, and James & Sirius are dead). 

Poor unemployed, prematurely-greying, careworn Remus (sigh).

aRk
who would like to take in Lupin and give him a good meal.