HI great guide,
helped a lot to figure how MW work on Legion but i found your suggestions on talent a bit too harsh and i would like to add my 2 cents here.
-Tiger's Lust i think its essential if you are running a meelee comp vs mages and maybe destro locks / ele shamans.It gives that extra closer they need to finish the job or pummel that polly.
-Ring of Peace honestly i am really cuurious to see the 7.1.5 version will be interesting
-Diffuse even though as noted Healing Elixir is better at 99% of times, on locks i like having myself as a bait at 50% life (see below) and when they go for the kill on me with lots of dots use this one to reverse back to them.Just for that little extra pressure.
Note that if not both enemy dps (on 3s) are caster's Elixir is still better.
-Defender of the Weak where is the love on this talent. This is a go-to talent on Lock,Spriest,Feral and basically anything that rots the entire team.I highly doubt vs Rot Teams you will survive that cleave and since you won't be 80% life getting that extra haste means a lot to your hots.
Also as noted above i like to stay at 50% just to keep this buff rolling and bait the enemies to go for me.
This talent is 100% for me on sight of any rot combo.
-Fast Feet i have seen a few high ranked players swap to this so i gave it a go.
On Dk's i like it for that Death Grip root combo if they happen to Grab me too far away from my port.
On Hunters pet is always on me meaning i always get +20% speed and the lower cd on root seems to be helping a lot.
Currently Testing it vs mages and locks (pet always on me).
Finally really bad advise that i do 110% of the time:
Double Chi Torpedo and Paralysis are enough to reach and stop Warlock's Portal at almost any arena!!!
Yes i sacrifice half my mobility on opening, Yes i don't setup, Yes i dive right into the enemy's hug, but we all know how important is for the warlock that Portal. The fact that they don't expect the HEALER to rush and stop it is awesome!!!
Hope i helped and if i didn't please response accordingly.