Oh, so sorry for my ignorance. I think a lot of people (I, being one of them) would need this feature very much, as Nyquist and Python are quite difficult to learn.
If it is just a matter of repeating steps with no test conditions, you could always edit your macro with notepad. You can find your macro in your Macros subdirectory here: https://manual.audacityteam.org/man/macros.html#store