When I was putting my gear away in my cabinet I had the same thought when I move my Crazy Chair out of the way. May have to make adjustments on the distance between the mesh to accommodate the chair stays, will have to see.

I'm going back-and-forth on the hydration sleeve, I liked it in the outer mesh pocket, was easier to get at to fill up. I have a sleeve in my Gregory pack, and it's a pain to have to pull it out to fill, then wriggle it back in, full. Still working on that idea.

Primarily I use a water bottle with a hip holster for it, so the hydration pack is iffy.
Life should not be a journey to the grave with the intent of arriving safely in a well preserved body, but to skid in broadside, thoroughly used up, worn out, and loudly proclaiming Wow! What a Ride!