There is an online video related to jedi level action filters with Sets located here: LODs of Fun with Jedi Filters: Level Of Detail Calcs for Data Geeks - Bethany Lyons - YouTube but without giving away news of new features, you may want to explore the Tableau Beta program or stay tuned for upcoming features because there is new functionality to help on the way. The Beta will provide you with visibility earlier if you like.
I hope that helps.
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Kent Marten already gave it away at TC Europe...there's a demo of the new filter action sets at TC Europe Keynote with Francois Ajenstat + Devs on Stage - YouTube. (it starts around 29m30s). It's a very cool feature hopefully coming to the next beta!