Thanks for the mention to my project! http://kinto.sh May I ask if you had actually tried running it or did you just get the feeling it would involve too much tinkering and custom work on your end?
For the most part the key remap is system-wide and should work the large majority of the time - but shortcuts that differ wildly btwn OS's do exist and end up having to be accounted for, if a person wants 100% consistency in their shortcuts.
An example would be select all matches in Sublime Text 3 is Ctrl-Cmd-G in macs, but is Alt-F3 on Windows. Kinto does account for that because I explicitly took the time to add it, but anything where the difference is simply ctrl vs cmd is taken care of every time by default.
Kinto really is designed to be the least annoying remapper possible in that it should take the absolute least amount of effort to install, maintain, and update as possible. Some python or ahk scripting ability is helpful - but not really. I think overall the config files are mostly readable by any novice. And the types of additions people would need to make are relatively simple compared to the more complicated Alt-Tab and other fixes I have already addressed in the project for both Windows and Linux.