Well, not sure if this is the right place to discuss stat distribution on items here, but still:
Circlet of True Sight compared to Boundless Gaze (Boundless Gaze as base):
1056 Armor (-44)
+70 Agility (0)
+95 Stamina (-5)
+54 Intellect (-14)
Meta Socket, Blue Socket (+8 crit, -8 agi socketbonus)
Improves hit rating by 60 (-6)
Improves critical strike rating by 42 (-27)
Increases attack power by 156. (+44)
Now, considdering the equation part of Item level mechanics (
Item Level Mechanics) you get a total of:
2/3 * 5 + 14 + (-8+8 = 0) + 6 + 27 - 44*1/2 = 50 1/3 - 22 = 28 1/3 more stat points for a 13 ilevel upgrade, which seems pretty decent. The fact that hunters would prefer another stat distribution is irrelevant to item level.
(edit: if compared to the 213 T7 helm, the circlet has: -14 + 16*2/3 + 7 (-8+8=0) + 7 + 5 + 22*1/2 = 26 2/3 stat points more, so the amount of stat points increased seems just fine for boundless gaze)