I have just come back to the TI2 and realised that it won't work with Big Sur. I am OK for the moment having an old Mac with High Sierra.
Good to hear that you might consider developing something for the Mac.
I have heard of Solar 3D and have just sent them a message as to whether their standalone will work via USB on Big Sur.
I have been involved in many software projects on the Mac and iOS - so I would be happy to FUND development for such a project.
Lately I have been developing using XOJO - powerful and friendly compared to Xcode.
Please let me know if you are keen.