Thanks to all.

My ideal pack spec list so far:

An external frame that becomes an outdoor “chair” back support when the load is removed..

A waist support system that field detaches from the frame to become a standalone fanny, lumbar pack.

A backpack that field detaches from the frame to become a frameless or internal-framed, standalone, pack.

A daypack that field detaches from the frame to become a frameless or internal-framed, standalone pack.

Tough, waterproof bags to be used internally or externally to the external frame or to the other packs.

Detachable sternum strap with secure camera and / or binocular carrying capability for use with any frame or pack combination.

Hydration system that fits both the backpack and the daypack.

Of course everything is ultra light, waterproof, camouflage, and extra durable.

That’s not asking for too much is it?