This seems to be a particularly interesting add-on for creating macros with. It was created by the author of OPie and MasterPlan, and was released earlier today.

http://www.curse.com/addons/wow/m6x

https://www.townlong-yak.com/m6/
https://www.townlong-yak.com/m6/conditionals
https://www.townlong-yak.com/m6/macros