i like it but in its present form it looks to me like more of a showcase piece. when i get mine i would modify it so that it would be more useful in the field, where too many systainers with just a few tools each would just get in the way, make for extra trips, etc. specifically, i would cut the insert into individual pieces and get rid of the generous spacing in between and push everything closer together, allowing for a kaizen insert on one side customized with cutouts for yet more related job tools. depending on the spacing, i would even attempt to cut some of the foam from the bottom so that i could try to put a shallow tray or container on top for more small or flat goodies. the iron case pockets would go or be repurposed because you can store one in the plane and the spare, uncased, can be safely tucked between the side of the systainer and the foam. end result--it would be chock full with tools still well protected and much more functional and efficient.
I think you have some interesting ideas here.. I'd tend to want to have a little less packed arrangement than you outline here, and perhaps pair it with another sortainer 6 drawer sortainer underneath it with supplimentary tools..