That moment when you realize that once upon a time my raid group was 2 gunnery commandos, a balance shadow, and a df slinger.
Ignoring PvP, (yes I know most if you can't do this) serenity should be top of the list for the sustained melee dps. Serenity has probably the worst burst damage reduction cooldowns out of melee dos. Additionally, you get rekt by aoe (**** running this spec on lurker) and the self heals don't help you nearly enough. The one thing serenity had going for it was the best/easiest dot spread. Now that it's on whirling blow it's pretty terrible.
Really the only way that they could balance serenity (and balance sages) would be to remove dot spread from the game. Hopefully the devs have removed their heads from their third point of contact and removed it for 4.0. If they haven't, balance is just going to be as bad going forward.
/rant