Just wanted to add to this - no thank you.

An add detector would invade the privacy of the player and cause the entire XIV experience to be soured for the majority due to a minority. No thanks.

Add-ons are against the TOS. Those that use it are risking their account. That has been enough of a deterrent for the entire life-cycle of the game so far. If those that get caught get banned, they knew what the risks were.

The entire game's population's privacy shouldn't be sacrificed due to a few people being unhappy. Thankfully, Yoshi agrees. Also thankfully, if they added this, it would shut the game down in some of the countries it's currently open in. So hopefully, this never happens - nor should it.