Warrior anguish breastplate is necessary, your conflagrant+ bp click is great. I'm sure there's a much longer list of not so obvious things someone can provide but the coa bp for starters will take a little work and be worth it's weight in gold later on.
CoA BP & Blood Drinker's Coating (and a modern BP) are the only ones relevant and powerful for tanking. There is substantial utility in the various cure clickies & dispels, etc, but those aren't "warrior" things
Not Warrior specific; Drunkard's Stein (PoK gate) Necrotic Dragon Bone (22k nuke, 11k lifetap) Unity Feather (personal Paragon) Mini Unity Horn (mini paragon) Arrow summoning quiver (forgot the name) Diplomatic Papers (clicky rune ish style buff) Primary/Secondary Anchor Device Pegasus Feather Cloak (Levi) old school I know Jann's Veil (haste, hps, end, ds buff)
CoA BP because it can't be stated enough. The class BPs from HoT and up, just watch the effects and collect the best ones of each effect as you get them. Cragbeast Queen Haste Belt or Ornate gaunts for haste clicky Tunare belt/tempest temple conch for ac/ds clicky Gnoll Reaver anniversary illusion for AC Incardine bp for invis IVU mask from VT Shrink item (anniversary ring, Vex thal bracelet, deep clicky) Circle of XXX clickies from PoWar
time has caught up to ol' Diplo papers. Its total protection is very much on scale now with Bristle recourse, which goes on every 7s with a chance Diplo doesn't have of protecting more versus a bigger hit. Versus hits of 50k or more, Diplo papers doesn't add any protection at all over Shining buff from a cle.
Bristle protection last 1-2 sec max ? it fade nearly instantly, while Diplomatic Immunity last for longer than this. It adds protection on hits less than 50 k, which is still useful. And, it has also some spell mitigation, that Bristle and Shining don't have.
Add the new Grow box to this, can't remember name ( at work ). Tanks will want this, can't count how many times someone will shrink you when not needed or wanted.