i didn't read your whole post, "Me," but i'll explain my beef with diezel midi operations.
you cannot simply hit instant access buttons to directly turn on / off amp features like send2, mute, channel insert, etc. (like mid cut, master 2, loop, mute w/herbert). instant access = CC commands. you can only send PC (program change) commands to diezel amps, meaning, a complete state of all features on the amp. for example:
midi controller button 1 = amp channel 1
midi controller button 2 = amp channel 1 + send2
midi controller button 3 = amp channel 1 + send2 + channel insert
...and so forth. there are some controllers out there that operate like footswitches like the columbus, prostage, etc., and that's nice, but some of us use big controllers and don't have footswitch modes. i have the axess fx1 + expander and i want to have single buttons to control amp features, but i'm shit out of luck because i can't send the diezel CC commands to simply turn things on and off. i could set up banks and banks with other PC combinations, but that sucks to me.
i'm going to work with midi solutions on a box to place between my midi controller and the amp. i've explained this too often and it sucks that i haven't completed this yet, but this is what i want to do. the current midi is nice for simple times, but i want more flexibility.
that's my rant and my goal. might not fit your needs, but it's what my goal is.