From a mechanics perspective I like Mastery and Crit being the most important stats, but from a gameplay perspective slow cast heals are very frustrating, especially when we see our heal target sniped 3/4 of the way through our spell’s cast time. So Haste is really nice to have and it just performs so nicely with the Resto Shaman ‘rotation’.
Conversely from that gameplay perspective, Mastery and Crit are in some ways at odds with each other but also complimentary, so it’s a bit awkward feeling. For example, I throw a Riptide on a target to get the insta-heal plus HoT going, and to proc TW, but if it crits then my Mastery-infused heal following is diminished.
Resurgence is a good ability, but if it’s to be our primary source of mana regen it needs to be significantly improved over the WoD version.