Such a device will need to have an excellent remote editor .... preferably a blue tooth to tablet interface IMO allowing anyone with an Android, iPad, or Laptop to have a comprehensive editing capability for the device ..... which should have minimal physical interfaces on it other than stomp switches IMO. To get the cost down, I would suggest either eliminating the ability to profile .... or to offer 2 versions of the foot controller ... one with and one without profiling capabilities. I suppose the device could be edited through USB and only to a PC laptop as a bare minimum though. Very few people are going to be editing rigs on-the-fly at a gig IMO.
Personally, I really like the setup using my rack and floor pedal because it keeps the cables away from my foot area on stage. A dedicated floor unit would need considerably more things going in and out of it which would clutter my stage area more. For me, live sound setup and tear down are the most important features of the device.
Editing through a mobile device is not as convenient as it sounds. We have Firehawks at church and they are a nightmare to edit. Sometimes the app loses connection with the device and then you’re screwed. I rather have the controls to edit from the device itself. Way more reliable and faster if done well.
As for cable management, you could have a company like Proaudio LA (or equivalent in other places of the world) make you a custom snake so you’re just dealing with one cable. They do a great job at making them look nice too! Also, live sound setup is exactly the reason why I bring my Helix to gigs instead of the Kemper. At least in my case, it’s literally grab and go. I’m talking 2 mins tops (and that’s me taking my time).