Some way to automatically handle "What's this effect?" questions.
So many people come in expecting that an example they like was the result of some digital filter or app. This then requires a tedious process where we try to divine what exact thing they're actually looking to do, and then usually explaining that there's not a magic app for that.
The usual result is that the question asker is unhappy ("ugh, why won't these jerks just answer my question") and the people trying to help are also unfulfilled because the asker runs off and never gives any further feedback.
I don't have a solution, but there's gotta be some better way. At the very least, automatic guidance pointing to the linked meta-question would help.