Chances are that the beginner's hall will function like WoW's proving grounds, and probably no more than the Bronze level at that.
Worse still, even if, at best, it has an actual parser, how useful is that really going to be when you can't compare it with real, in-group situations?
At the very least we should all have personal parsers. At best, our class quests should probably start actually helping new players hammer out their rotation, and require a certain level of dps from them (likely using an auto-leveled or synced gear from the given test) so they're not walking straight into future criticism, parsers or no parsers, when the tank notices that they're doing a third of the enmity of the other DPS (no enmity-drops on either) with only one target available, or the party wipes to dps checks.