On some more complex features like filtering, I thought a confirmation message to users before it saves the content config would be good. (- Not the green pop-up at the top, but a white modal box.)
So, for example, you add some filters, and when you select "Update," you get a little modal message just confirming:
You're about to filter your content to show only People(model) with the Job(Property) that does not contain (condition) the word cat" (value)."
OK- continues to save. Cancel - lets the user go back and update their filter.
To be refined, but hopefully, it demonstrates what I mean. For example, the bit in brackets could be a hover-over help info popup.
Maybe you could also have a sample data preview too.