Perhaps call it Advanced Training Hall?

While some were already mentioned, Ideas I'd like to see implemented would be fights that:
-Required everyone to use support skills (ex: Eye for an Eye, Virus, Dismantle, "part"-Graze, etc...)
-Taught attentiveness to the various marks above people's heads (ex: Comets, Divebombs, etc...)
-Required a tank to rotate their cooldowns to prolong time with reduced damage taken (ex: reduced healing aura on party)
-Have more "Coincounter/Minotaur" -like abilities (ex: No indicators)
-Force a focus target (ex: Reduced damage from AoE abilities until a particular mob is dead)
-Limited movements by using a continuous bind every few seconds, or applies a debuff when too much movement is done (This is to get rid of "twitchy pvp-er syndrome" and to teach how to improve DPS/Healing by only moving the distance necessary, not just clear across the room.)