Peter,
Some thoughts for your consideration on the "button" UI.
Sorry, but I don't think the browser apps are appropriate models for any other type of app. I have just checked numerous Apple Mac apps, and I can't find any, other than Safari, where you "click and hold" on a button to display a list. IMO, this is very counter-intuitive. For decades buttons have represented an action to execute when you click on it.
OTOH, there are numerous cases where clicking on a differently styled "button" displays a list, like the share button, or like the Finder.
Perhaps the Finder dropdown buttons are a better example:
I guess the most important thing is that if you choose to use non-standard, or uncommon, UI, then please document it, and advertise it well in the "new features list". You could also put this in the tooltip:
"Click & Hold for a list of recent macros".
Also, it would be most helpful if all of the "buttons" were also in the menu, especially the "Recently Viewed/Opened", which should be called "Open Recent" in the menu to be consistent with other apps.
If you don't really mean "edited", then don't use that word in the tooltip.
OK, this is confusing. It is unclear what the real difference is between these two:
Checking again, I did find that the Finder uses the click-and-hold on the forward/back buttons like Safari does:
But it never occurred to me to do that in the Finder until just now. Perhaps click-and-hold on the forward/back buttons is a new Apple Mac standard. I don't know.
But just because Apple does it doesn't always make it the best thing to do. 
Thanks for listening.