Almost every camera case I see assumes that you are a strong and healthy person who can lift the case into the air and put it down on a table in the jungle / urban jungle. A plethora of equipment is revealed to you like an all you can eat buffet. Problems:
- I can tow, I can't easily lift
- I can't lay it on the floor and scrabble about
- Urban jungles in the UK don't have seats for the elderly to discourage mendicants - tropical jungles are apparently full of sacrificial altars

I need to transport (by bus and train) although never by air
- a walkstool
- a Manfrotto 190 tripod with a Rogeti geared head
- occasionally a 180-600
all of which being long would logically be carried vertically and lift-outable and don't want to be outside the envelope of the case.
For shooting, a bag with say a Z8 with a 15-mm shift mounted and a D750 with a 24-mm shift mounted and some general purpose lenses.
All the cases - photographic or not - seem to zip along a long side. I'd like one where the zip went a third of the way up the sides and across the bottom allowing it to pull forward like a tongue in a shoe.
Alternatively I can imagine a custom cart with the three deep tubes rigid and a ThinkTank Shapeshifter strapped to the front.
Any bright ideas? And yes, one day it will need to be micro four thirds.
David Edge