I don’t think there is any commercially available macropad that allows remapping without compiling. A custom macro with a controller that runs MicroPython though, like the Raspberry Pi Micro, can be modified by changing the source code, so no extra software needs to be installed. See this as an example https://blog.4dcu.be/diy/2021/04/05/Macropad.html
I’m enjoying it, good work!