@peternlewis It would be super handy to be able to paste above a selected action by holding another modifier, as you can when adding a Favourite. Particularly useful when you want to paste something at the very start of a macro.
Off-topic, but while you're here:
I think the (great) new Press Button When Enabled action might have a small Timeout bug. Perhaps it's just me, but it doesn't seem to accept 0.x decimals when Seconds is selected.