[TxMt] How about a "replay last used macro"?

I love the scratch macro and the ability to replay it with a keyboard shortcut. How about a "replay last used macro"?

E.g., let's say I have a saved macro that I don't want to assign a keyboard shortcut to, but which I do want to use over and over again for a stretch in a document. Right now I've got to pick it out from the menu each time.

If we had a "replay last used macro" I could just hit that keyboard shortcut repeatedly. It could probably even replace "replay scratch macro" and still have the same effect when the last used macro happened to be scratch.

Thoughts?