Very Interesting video @Hinfrance nicely depthed opinions on the two models.
I myself have the 4th generation model (big fan of users Tom Morello, Jack White, and Radiohead).
I can totally see where you are coming from with the, some of the suggestions you had noted, i could happily agree with.
From my experience with the 4th gen model (pretty similar to the 5th layout wise), I'm pretty content with the single activation Button, and rotary knob to select sounds, although it is a bit fiddly. I've recently seen a manufacturer create a sequencer Dual footswitch to go through the different effects, and apparently tweak/improve some too.
The only main bits of grief i have with my unit are:
- chassis is good and strong, but a bit heavy, makes transporting my pedalboard to gigs considerably tougher on foot!
-Powersupply it takes the opposite voltage/current to the rest of my pedals, and i cannot not power it with my Voodoolab 2
-Although i love the infamous filthy sound that the pitch effects create, comparing the cleaner sounding EHX pog units. I sometimes wish that there was a switch to clean it up fro when playing chords/cleaner sections, more musical aspects

IS that what the classic/chord mode is for on the 5th model?
Great video, and I hope to hear your thoughts.
Cheers,
Connor