I (and many others) tried for years to get a dps test dummy put into towns or the arena or something, to no avail. Instead, people had to track down gimmicky mobs that have very high regen or don't attack back or something similar, and several of these were removed when they became common knowledge because the staff didn't want people to be able to test their dps like this or something. It's completely ridiculous to not have something like this available. It would likely make balancing the game much easier than it currently is too because right now it's dependent on staff testing things themselves or sometimes picking a few players to help, which results in some very large imbalances and oversights. This is just as true for threat as it is for dps.