Taking this out of the DPS meter thread because it is just going to get buried there.

This is a less "toxic" compromise than an in-game meter that solves the root problem.

Let's start with some facts:
Fact: The developers create all content to be completed with the tools currently available in game.
Fact: They test this content to ensure it is completable at a minimum iLvl and competency.
Fact: The tool Stone, Sky, Sea exists so players can test their damage output and see if it meets the standard to complete a duty.
Fact: Players can currently lock Party Finder recruitment by iLvl
Fact: Players can currently lock Party Finder recruitment by Duty Completion

What I propose is the ability to lock your PF listing by completion of Stone, Sky, Sea for that duty similar to how you can for [Duty Completed].

This is no different than being able to lock an iLvl range to make sure the players has ample gear to survive the duty, in this case it is just making sure the player has ample damage output to complete the duty

Great news is the SSS dummies already exist in the game, and I would assume are calibrated to what the developers feel like the minimal viable damage output to complete a duty is.

Best part of all, its completely optional, much like iLvl and Duty Completed locks. If you don't want to join a party that has it locked? You can join a party that doesn't require it or make your own party.