I have put some thought into an idea that goes along with the addition of the workshop in which we were given as of 3.0. It's not uncommon for any of us to come across players with poor DPS. In fact this has been an on going discussion throughout the forums for quite some time now.
What I would like to propose and also open for discussion is a room/instance within our FC house, much like the workshop that allows us to customize particular scenarios while fighting a training dummy of sorts. This dummy can be customized to stand still and be beat on until it breaks. At the end of a round and you get a summary of DMG displayed for everyone involved. Or, you can customize alternate scenarios that cause the dummy to cast a variety of AOE abilities/skill/spells, fight back and/or move around. This would allow member to train together on rotations and work towards a goal to increase DMG numbers within different difficulties of endangerment. Maybe it would be possible to implement certain boss mechanics but I think a general place for us to work together on helping people/players increase their potential before they enter some of the harder content.
You could also utilize the strength of these scenarios to bring in healers and tanks as necessary. You really could go anywhere with this idea and allow players to go in by themselves and work on their rotations, possibly with a tutorial or guidance on how to maximize your class.
I don't want to get to deep into the possibilities as I believe you will grasp the concept of what is capable here. Think of it like the X-Mens Danger room! With that said I would love to see what other thoughts or ideas evolve from this concept. Thank you for reading, Mal