I am not a big fan of the wood look, but overall I really like your cab.
I like the modular control panel, but I would have put a strip of wood along in front of the control panel. Then you could have had a nice even t-molded look, instead of seeing all the seperate control modules.
Prolly a lot more work than it sounds in my head, but you could have had a swing down lip in the front. You could swing it down to replace a module, and then swing it back up to lock all the modules in, with a very clean looking edge.