Dweste:
Change is a good idea: will add.
Phone numbers: Ditto; will write them on my ID photocopy sheet.
I keep forgetting spares for my phone: I'll pick up an AA battery charge adapter.  I've already got a wind up light/radio in the house, but maybe it's time to move it to the BOB.
Personally, not a big fan of a GPS.  I'm in an urban environment, so the chance of me getting "lost" are slim.  Detroit is essentially a grid.  If I get out far enough, I'm not so worried about where I am, since, well, I'm not trying to get others to find me!  Plus, without a map... which is why I've got a compass on order.
My FAK on my BOB is pretty meager compared to some others I have, for example, my home or my vehicle FAK.  However, it'll do in a pinch.  See  
http://forums.equipped.org/ubbthreads.php?ubb=showflat&Main=10200&Number=115963#Post115963  for more on my vehicle FAK.
I totally agree with the water issue.  I've got 2 quarts ready to be filled, with 2 collapsable bottles in a fanny pack (the "ditch kit" idea).  On the way out the door, as I pass my fridge, hopefully I remember to grab the Nalgene in there too.
I'll add some munchies, maybe to a small bag and add it to the hip belt.  Good idea.
Joseph: 
MP-1 tabs are already in place.  Good idea about the leather gloves though; I'll trade out the new ones in the BOB with the used ones I've got in the backyard.  Still working on a cup - worst case I'll just toss in a big can of chili or something and salvage the can.  
Thanks!