My feedback is for the Taken Champion, Stirok, in the Rocketyard. I would suggest relocating this adversary to a different location. On Earth, the Skywatch and Divide are the other locations for Taken Champions. These areas work because you can see the whole area and find the Taken Lieutenants to trigger the event.
All encounters require that you wait for the Champions. On top of that the Rocketyard has many obstructions that prevent you from seeing the Taken Lieutenants that appear. Another complication is that there are many Fallen that appear sporadically throughout the area, so it takes some determination to find the Taken Lieutenants. The Rocketyard encounter seems to have the same duration as the other areas, but with a far more dense and obstructed area. Therefore, by the time you find the Taken Lieutenants the event will disappear.
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Edited by SaltyJack591: 10/5/2015 2:08:37 PMMost of the time the event times out. This in itself is more than frustrating. Every other event can be completed with 2 gardians providing you do enough dps. You need 3 gardians for the rocketyard and even with 3 level 300 gardians it's tough to complete without the event timing out.