I was up talking with my fellow theorycrafting addicted priest friend and we were tossing around different ideas of what you could possibly do as a boomkin besides the general "Blow $h@t up." So I started playing around to see if it were possibly to make a panzerkin work at all in LK.
Panzerkin.
The build I would utilize. I would probably use this for my build in general. You can't spec Nature's Reach for the mere fact it will lower your aggro which is bad. I think I've picked up the talents I could possibly need. Pushback reduction, more damage on thorns, Damage Increases and an increase in armor.
Now I figure crit is going to be an important stat just for the mere fact for holding aggro is not going to be an easy thing. I figure stat stacking would something like this. Defense Rating, Stamina, Dodge Rating, Crit, Spell Power, and then Int/Spirit.
Obviously being defense capped is going to be important so you're going to have certain items be for strictly tanking. I figured a good place for this would be your rings, necklace, cloak and trinkets. You would obviously have to fill in certain areas to meet certain requirements such as gemming for more stamina. But since in BC there were stamina/spell power gems mainly utilized by protadins I'm going to assume (which is a bad idea yes) there are the same thing in LK.
I forsee the biggest problem going to be meeting either the defense cap or having enough stamina. Now if you're a leather worker you're going to have access to the Stamina Fur Linings which will add 90 stamina, this is a very substantial amount. So going with this form of idea you're enchants will most likely have to be all tanking orientated.
Of course with all of this it's going to be a challenge to find the right gear and stat ratio, the perfect build but also having the right group make up to allow this. CC is going to be a major thing you'll need and having a group who understands the mechanics of how tanking as a boomkin would have to operate. With the changes to resilience not affecting anything other than other players this style of playing is going to be much harder than it used to be.
But, I will still attempt to try it and see if it's possible. Among other builds I've really really been tempted to try out some form of a psuedo "Warkin" build where you focus on the most amount of damage you can posssibly crank out with your dots, IE: glyphing IS/MF and utilizing Eclipse to its fullest. But, that will happen another day.