Having purchased the Steam Deck, I was thinking about another tool to control Renoise without a keyboard 
Anyway…
I would like to refer to esaruoho’s Paketti for Keybinding as it seems to be handled well.
- I will create a US keyboard layout first, but will also support other layouts such as AZERTY (since I have many keyboards with different layouts).
- I am thinking of addressing the issue of the GUI being too large, for example, with an option to make the function name text abbreviated. (e.g. Instrument → Inst.)
It may take some time to complete, so if you can’t wait, feel free to use this idea and source code and publish it as a tool you created!