Precursor: This isn't a whine thread (maybe a little), just a little post documenting some of the effects past changes have had on MW mastery with little to no changes being done to rectify the offset balance. So pls don't spam the thread with new mastery ideas/changes, make a new topic or something.
Oh and if you find something that needs corrected go for it.
Mistweaver mastery is unique in how it functions, where other healer masteries function as flat % bonuses to the already existing heal - Gift of the Serpent is a spell of it's own that scales from both quantity of heals and mastery rating, with it's own healing formula that isn't based on the spell which spawned it. This has made a situation where with changes over the expansion, due to neglect, mastery has become progressively worse - despite it already being an exceedingly weak stat.
It's worth saying from the get-go that this actually has worked both ways. There are numerous times when a spell or spell(s) have been nerfed and mastery is propped up. I'll go into more detail with this later when explaining the broken dynamic between single target and AoE healing relating to mastery.
We also don't know for definite what the current scalars are, so I'll be working off the idea that the developers would relay such important change information to players. Considering the nature of the mastery and how difficult it is to analyze, (no combat log event when an orb spawns, but one when they're picked up) we can only work off estimate spawn counts.
List of Relevant Changes
Going from the date of GotS scalar announcement (~30th october, 2012, so in late development) and assuming they haven't changed:
• Renewing Mist: 0.15
• Chi Wave: 0.25
• Zen Sphere (Periodic): 0.25
• Zen Sphere (Detonate): 0.15
• Chi Burst: 0.15
• Soothing Mist: 0.3
• Soothing Mist (Statue): 0.15
• Enveloping Mist: 0.2
• Uplift: 0.25
• Revival: 0.15
• Eminence (Self and Xuen): 0.2
• Eminence (Statue): 0.1
• Chi Torpedo: 0.15
• Spinning Crane Kick: 0.1
Renewing Mists now travels to 2 additional targets (was 3 targets).
So now instead of each Renewing Mist cast causing 36 heals, it was doing 27. So a 25% reduction in orb spawns from Renewing Mist alone. This would be inline with any other healing mastery, however since as previously mentioned Gift of the Serpent has it's own healing formula.
Chi Burst now does 380% more damage, 69% more healing, no longer costs Chi, and has a 30-second cooldown.
Chi Burst was previously spammable before 5.2, it also had a 0.15 modifier to it's mastery proc rate. However with the bump to 30 seconds, it still has the same mastery scalar. So a spell which now does in the region of 1 million healing per cast only spawns about one orb. So at 24% mastery, I'm getting roughly 100,000 healing on top of this, a 10% increase... If I added 10,000 raw mastery rating on top of what I already have - that only increases to two orbs - or a 20% increase for 10,000 rating.
Healing Spheres generated by Mastery: Gift of the Serpent have a duration of 30 seconds.
Essentially meaning that orbs have to be consumed within 30 seconds to be of use. Many Mistweavers glyph out of this because this change was detrimental to how GotS is supposed to work. This was probably meant to work in combination with the very iffy 6 yards and 50% explosion change, it didn't.
<<general gutting of fistweaving>>
One benefit to fistweaving was the fact it made you a tiny smart heal turret due to Serpent's Zeal passively healing the raid for small amounts. This accounted for a lot of mastery procs due to the fact the healing was likely to be effective. Mastery still does not proc from healing full targets, probably to avoid spawning fields of orbs before a fight - which doesn't work because hello life tap