The admittedly vague descriptions ("large" vs. "moderate") of how much each spell heals lead me to believe that Renew has returned to the old model of HoT healing more per cast than direct heals.
Apparently after an entire expansion of Holy Priests desperately trying to find a use for CoP and failing, Blizzard decided to simply force Holy Priests to use it.I totally agree with you statement about PoH, I liked the old version more aswell.
Sanctify is even worse - from its description, it sounds like its ground-targeted in addition to its cripplingly small radius.
Honestly, I'm horrified by that class preview. It really sounds like they've destroyed everything good about Holy and made it into a one-button Renew spec in raids.