I think something has to be done about spriest healing output. I've lost 2 2v1s now, me vs lock/priest and rogue/priest, and it took everything to finish the 1v2, and reset for all my CDs and full hp/mana. Its pretty dumb how a priest is able to pillar with PoM+shield, and slowly regen his mana all the way up.
I found it completely retarded when we reset for a while to where it was a duel with full CDs up. I managed to get a CS+blink-nova sheep, stripped all his buffs, and opened on him with ~6 seconds left on CS CD. The stupid part is how much CoC costs in comparison to dispel/fade, and thats the only way you'll effectively get a snare effect on him, since he will fade every nova. The other dumb part is how high of dpm devouring plague is compared to frostbolt.
When I lost by 2k hp because we were both 0 mana and his DoTs finished me off, it made me extremely upset. I completely outplayed him, and I don't even understand how someone who could have easily healed the lock through my damage in the 1v2, ends up beating me since his spec is much more efficient(higher mp5 consumption =/= lower dpm), and maybe a small reason to do with the fact that Dalaran has the buggiest pillars.
Edit: As a side note, it is literally impossible to beat an spriest that pillars and resets all the way up. The only possible way would be to create some leverage between the pillar and the priest, and if he is content with sticking to the pillar(which is the smart thing to do), he'll win because his main priority is dispelling roots/snares, which is all he has to do to win. Now both sides can be stubborn and take the 16 point loss, but more often than not one side will budge.
shadowpriests in crit gear have about 15mp5
outside of disperse and fiend, youre not getting anything back by staying in 5sr
fade cd is a hell of a lot longer than nova cd
spriest dispells are hella mana exspensive as well
not saying you should win with a pillar up, but no need to exagerate