Simple @macros editor
Not really sure what you had planned...

Just have the "Edit" action in @macros act as a function to delete the selected macros and replace it with the new macro, speeding things up a little in that you don't have to separately delete, then make a new macro with the same name. You don't need to implement whatever it is you guys were planning to with the Macro Editor.

The @macros code is so old that I can't even pull up the last code commit on it because it was before we tracked that. So, probably it was written in 1997. It annoys me that you can't edit as well.

Cheers!