Yes, the FCB1010 has been around awhile and there are many upgrades and hacks. It you use the Tinybox upgrade you don’t even need the hardware (foot controller) - you can run it from your computer, iPad etc. This has been covered in detail over several years in the Community. Try the link below for a quick look.
It doesn’t get much cheaper than modifying a FCB1010. It’s built like a tank too, but the size and weight is also the main complaint although as noted you don’t even have to have the hardware with the Tinybox mod. The GT Mastermind is a lot fancier and visually easier to use but at $1900 for the 22 model you would hope so.
Behringer FCB1010 hardware mods - Hardware - Gig Performer Community