buck,
I've tried everything to organize my wrenches, and there is no perfect solution. Every solution has it's upside and downside. Here's what I'm planning now:
1) Two drawers are needed, one drawer for Metric wrenches and one drawer for SAE wrenches. This makes a world of difference and opens the way for steps 2 & 3 below.
2) Wrench racks of all kinds are out. They do organize & contain wrenches nicely, but they also all waste space in their own way.
3) Thin stock metal dividers are in. I'm making my own. Here's what I'm planning for in each wrench drawer. Each drawer will have divided space (bins) for 7 wrench patterns:
a) Standard pattern ratcheting combo wrenches,
b) Standard pattern non-ratcheting combo wrenches,
c) Oversize non-ratcheting combo wrenches (20mm+ or 15/16"+)
d) Long pattern offset DBE's,
e) Short pattern offset DBE's,
f) Standard pattern flare wrenches, and
g) Misc. small wrenches (ignition & obstruction).
I'm planning on spacing the dividers so that all my wrenches in each category (a-f) will just fit in the dividers when laid on their sides +1/4". The Misc. small wrenches (category g) will just be tossed randomly in their bin. The dividers will probably be no taller than 1" or 1-1/4" so that it's easy to get any wrench(s) in and out of the bins.
I have no idea how big your roll cab is or how may drawers you have to work with or how many wrench patterns you have. My roll cab is 26-1/2" wide x 18" deep and my drawer dimensions are 22" wide x 16-1/2" deep so my options are limited.