My memory of tactical mastery is a little hazy, but isn't that used for stance-dancing?
Barely any expertise is the condition of ICC gear unfortunately, but smart choices will keep you close to the softcap of 26. Glyph Devastate. Dodge trinkets meh. The stam/armor trinket combo's are quite effective currently (as most fights in ICC are physical) but on magic fights 2 x stam trinkets could help out a lot.
As for the rest I'm a little unclear as to what you are asking....?