You know, the wires may be a mess, but I think you could have reliability issues if you hard mount the boards. If so, you'd be coupling the assembly to the enclosure in multiple planes, which could result in some stress on the connecting joints. If you can do pin headers, that might be a reasonable compromise.
So, to me, it looks wonderfully solid as it is currently configured. Just fantastic.
I've got a couple of FV-1 boards around here already. Maybe this will inspire me to miniaturize.
And thanks for the compliments; it's mutual.