Sadly I'm meriting WAR first so I'm not gimp for endgame, but after my focus will be bst.
Here is my overall merit plan since theres some overlapping. If I end up soloing some merits it will go to bst first.
Warrior's Charge (DA Steelcyclone mmm...)
2/5 Berserk and Aggressor
Either tomhawk or savagery, its a toss up need to do reading on how useful tomahawk really is.
Two out of three of either sic, call beast, or intimidation. Its really a tossup on what I want to do with bst in the future, I always wanted to do bst tanking as a pet project in the future.
You probably notice that the priority is for weapon skill then % modifiers for DD like DA and crit then the rest of the abilities that can be merited. Base stats like STR are fairly low priority. Attack is better for auto attacks and multi hit WS.
Also I'm a bit of a minmaxer, have fun whatever your play style. I did some serious theorycrafting in wow, thankfully in this game you can pick up what stats are better easily.