Hello,
I'd like to suggest two modifications to the training dummy area. The first is that we make the area one with high HP regeneration. This way people with skills that consume HP like blood arrow can also fully test their rotations and DPS as they would in a raid environment where a healer would be available.
The second modification I suggest is to have at least one training dummy that can reflect aggro properly (we already have Balton but if we dare aggro he one shots us :)). As it currently stands it is very difficult for tanks (especially ones testing new combinations) to figure out exactly how much aggro is generated by each of their skills, with no way to test except in raids. Since DPS and healers have ways of testing their own combinations and rotations, it seems like a good idea to allow tanks to do the same