TSW actually has a system like this. Fittingly, it's called the "gatekeeper", and has tanking, healing, and DPS versions you can do. In the healing version in particular, you have to take care of DPS NPCs that sometimes stand in AoE, raid damage, and aggro moving between the melees. In all of them you also have to dodge.

Unfortunately, I can't really say it helps with elitists. People still want you to link high end loot, have top end gear, have clear exp, etc etc.

That said, it is a wakeup call for a lot of players that get that far.