Thanks for trying. That link was my first link, and it doesn't mention anything relating to efficient workflows.
I read the front matter for these repos, and while the build instructions are the closest I've seen, they still don't make recommendations for low-effort iterative experimentation.
- RepRapFirmware boils down to "use Eclipse" once you've installed and configured the cross compiler and source.
- DuetWebControl boils down to "use
build.shand upload the tarballs"
When I start fixing the performance problems in DWC, I'll write a wiki page about it and we'll see if the ivory tower responds favorably.