This idea may ruffle a few feathers, but something else to consider might be to migrate CAL scripts to a modern, widely supported scripting language, such as Javascript (or one of the others currently available such as Lua, or Python).
Reaper includes ReaScript which is compatible with Lua and Python.
Tracktion Waveform includes a macro editor that is Javascript syntax compatible.
There are probably a few others.
It would be much easier to get community coding help or support with a mainstream scripting language. CAL was developed for the task years before other good options were available.
1. A new scripting module could be implemented in the DAW.
2. Existing CAL scripts could be translated through a separate automated process to the new language.
3. Many free resources and tutorials are available, including extensive online documentation for modern scripting languages.
In any case, I believe a modern DAW should fully support scripting. I'm not against supporting CAL, just that's not as likely to get a priority for increased support, IMO.