I don't think this is a balancing issue, more a quality of life change so I've stuck it here - please move if you think another forum is more appropriate. I think heal RP/Zealots are in a really good place right now, although there's no real logic to which tree your mastery points go into, or what core abilities are boosted by each tree.
The dps spec though is seriosuly hampered by the mastery tree layout. This is not an attempt to buff either spec (though dps spec will be more viable in solo, group and WB play) but more a quality of life change for each spec, and an attempt to make the tree layout more logical. I'd be really interested in the thoughts of other RPs/Zealots. See here viewtopic.php?f=15&t=27346 for the RP discussion.
The problem as I see it is that the Zealot mastery trees are completely jumbled together - I heard a suggestion that they were originally meant to be split into ST, AoE and something else, but even that looks a bit dubious. Below is the current mastery tree layout with a quick note about what each ability does and what each trees contains.
Next is my proposed layout of the mastery trees - I've tried to reorganise them into heal, utility and dps focussed trees.
3 points
No change
5 points
Rearrangement of the Rituals to suit heal and utility trees, dps tree is left with chance for shield on hit.
7 points
No change. Swirling Vortex in the DPS tree is very lacklustre for a 7 point tactic and I feel needs a total rework, but that's for a separate balance forum discussion.
9 points
Only change is in the Witchcraft (now utility) tree, where Mirror of Madness has come down from 13 points. Damage values can be adjusted accordingly if needed. Storm of Ravens has been moved out to the dps tree. Boon of Tzeentch in the Alchemy tree I feel needs a total rework to something more heal focussed, but that's for a separate balance forum discussion. The tooltip also shows 150% of the damage as healing compared to the RP's 100%, not sure if this is just a tooltip error though.
11 points
Changer's Touch and Tzeentch's Grip swapped places - the 'shield on heal' Tzeentch's Grip fits much more naturally in a heal tree, and likewise 'heal debuff on crit hit' ought to be in the dps tree.
13 points
Probably the biggest changes - Aethyric Shock (stagger) moves from the heal tree to the utility tree, Winds of Insanity moves from the dps tree to the heal tree. Storm of Ravens - the Zealot's main ST dps ability moves from the 9 point spot in the utility tree to the 13 point spot in the dps tree. Damage can be adjusted upwards as a result, and even better (if possible?) the 10% strikethrough that was added to the Transference tactic could be tied to this ability (activated by unlocking this ability, though not sure if this is possible? Ideally the strikethrough would remain aaplicable to all dps abilities though, not just Storm of Ravens).
15 points
Unchanged.
As mentioned, DPS Zealots will see the biggest benefit from these changes, as currently their three main abilities - ST damage, AoE damage and heal debuff are split across all three mastery trees. Bringing them together will hopefully make DPS Zealot a more viable option. Right now the choice is between a strictly WB-orientated spec that takes the AoE damage spell and heal debuff which is absolutely useless outside of a WB setting as you have no real ST damage options; or a useful solo/small group spec that takes the ST damage ability and heal debuff that then has no role in a WB setting as you cannot provide meaningful AoE DPS.
This is an attempt to bring some sense to the mastery trees though that will then allow balancing to take place - I don't think it's worth proposing changes to individual abilities at the moment before some bigger scale reorganisation happens. This isn't about single specs having access to all the useful toys (with the exception of the DPS tree granting access to all of the DPS abilities, though that doesn't seem unreasonable!). See below for comparison of common current and proposed available specs.
Spoiler: