I've been thinking about the T18 Bonuses + class trinket and how they affect our stat priority and gearing strategy..
Personally I don't think it'll change all that much, except we might value spirit more than we do now (ie. use double spirit trinkets). Mastery will still be best on progression fights followed by haste and then crit. I think our 2set and 4set quite clearly indicate that we need haste over crit to pump out the chain heals faster. Possibly stop going for mastery at a certain point and then go all out haste?
As for talents/glyphs, I don't think we'll take echo unless we absolutely need double spirit link. So default setup will be Ancestral Swiftness/Rushing Streams/Elemental Blast/High Tide. Possibly swapping swiftness for elemental mastery if theres a huge burst phase. Going primal ele if mana is no issue. I also think riptide glyph is going to be completely dead (thank god), and I seriously doubt glyph of chaining will see the sunlight during progression.
Another thing is when to break 4set from T17 -> T18.
The 2set is fairly underwhelming imo so I don't think we'll want to swap until we can go from 4set -> 4set.
Keep in mind I haven't done much PTR testing so I don't know most of the fights. Post your own thoughts if you disagree or have comments!