I hope these mentions of mana costs are mistakes, as things like Lightwell costing costing 6177 mana is a bit of a steep climb from the current 340 odd. Also, Power Word: Barrier costing 13383 mana, that's about half of someone's mana pool (okay about a 3rd of really well geared raid buffed disc priest). Seems a bit steep, even for an "Oh Sh!t" spell, which since it's on a 3 min cooldown, doesn't really qualify for anyway.
And Chakra only seems to benefit Heal, not Binding, Flash or Greater... Still no tank healing for Holy then I guess.
Improved Spirit Tap - Requires 3 points in Spirit Tap.... Erm, where is it?