@lipschitz I think you are right. While I agree with others that native MacOS Python development is great, there are two cases where I'd like to see Pythonista for IOS run under Catalyst.
First, when I'm developing a Pythonista app to run on IOS, and I happen to be at home in front of my big screen, I like to use @code and let iCloud sync the changes to my iPad or iPhone. Then I run and test there. The sync time is normally about 2 seconds for changes. Some times much longer depending on the vagaries of iCloud. With Pythonista running on the Mac, maybe it would be faster? Certainly cmd-tabbing to Pythonista without having to pick up the phone would be convenient.
Second, Pythonista nicely solves the "throw a UI together" problem. Certainly better than tkinter. If it ran under Catalyst, then I get access to my apps everywhere. Would also be nice for the folks who use apps I write for them.
I wish Apple had embraced Pythonista as a first-class language for app development. This could be the next best thing.