Ok I'm going to start this off with,"this hasn't been thought out well yet" I'm just interested to see what Bpl thinks.
So, I'm making my next pack, simple frameless hipbeltless pack. (I've never liked them) As I day dream about how awesome it'll be I start thinking about, blah blah blah, back to the point.
My idea is to have a separate pack for my water, and likely my food. It would be a butt pack un attached to the rest of this pack.
The heaviest item would be close to the center of gravity and would also have its own suspension
Easy retrieval of food and water while walking
Could be used as the food bag, or if crafty, a gravity water filter bag.
Could be used as a day bag, if anyone here does that
Would keep water away from your gear in case of leaks.
Would likely be heavier than just adding room to your pack
More to deal with/take care of
You're wearing a fanny pack.
That's all I've got, your thoughts on the matter?