I dunno. Maybe I am biased because I’ve used MP for a long time, but I don’t see it in its current form as needing a complete rewrite or makeover. Sure its not perfect and there are definitely a few clunky things, especially the control-F advanced or beta items page that could benefit from it’s own tab, perhaps some sort of ribbonized UI would also help navigate better.
But I also wonder if some of MP’s criticism comes not from MP itself, but from the inherent complexity of Ardupilot, (and as such is not MP’s “fault”), unavoidable imo because of its power and its aim at both the casual user and high end professional alike. Which explains why there are close to 1,000 parameters, many ways to connect, etc … But on that point I have yet to find a copter than won’t fly nicely (perhaps not “perfectly” without some autotune and tweaks) keeping all defaults values, and after just a few clicks in MP. In other words completely ignoring all advanced functionality where MP may get, well, complicated. And that for any kind of cheapo HK’s plastic frames with cheap motors/escs/props etc …, to 20kg octos with 30" props and 80A escs. (Heck, I even won a bet once with a friend (stupid bet in retrospect, admitedly, but I won, lol) flying an 8kg octo with a missing prop, and then no missing prop but one installed backwards. All on stock settings, and again after only a few setup clicks in MP). Hard for me, therefore, to fully agree that MP requires a complete makeover from it’s current form.
Another consideration that might be germane to this discussion is the opinion that a makeover will always leave something to be desired, and while it could benefit some users, it won’t others. If you don’t believe that come up with one program, or OS for that matter, that doesn’t have many perceived flaws by many. Win 10, MacOSX or Linux in any of its incarnations, desktop environments, etc … MS office suite, Adobe products, etc … Remember the first time you used Photoshop or Gimp, 3DS Max, or for that matter even something like Excel? etc …? Felt a bit lost if you didn’t seriously study documentation? Ramp up time? And even if you are an expert now, are you really fully satisfied with it’s UI? If you are, I’ll bet there’ll be a slew of users who will tell you the exact opposite.
In summary this is not a plea to keep things the same but a word of caution that any drastic makeover may very well end up pleasing some, yet alienate others. With the net result, after all the work, being a wash. Also explains why, as you say, “we already discuss the MP makeover many times and each time we don’t manage to agree on something”