It would be great if you could configure the filter widget to display the interface for building a custom query by default. For my use case, I don't want to present canned filters. I just want the end user to build their own query, but its a bit hidden from them and not user friendly.
Here is how it opens now:
I'd like it to open more like this, so that end users can see how to proceed and have fewer clicks required to create the expression: