As shown over in the
Optimal Sets thread, enchanting your chest with +15 spirit and boots with +18 spirit becomes optimal when you reach 2pc. T9. (The bonus converts 15% of spirit into crit.)
1) Does that also mean it's best to shift a 18/53/0 FB-TTW build to 20/51, to max out 3 talent points in Student of the Mind?
2) When going for 20 points in Arcane, most people steal two points from Fire by losing Combustion (or Blast Wave if they have that instead) and 1 point out of Flame Throwing. But after 3.2.2, Combustion ceases to proc from Living Bomb and becomes a useful cooldown again. Does 20/51 with no Combustion still trump 18/53?
3) If Combustion becomes desirable again, where else is a viable place to steal a point from to max out Student of the Mind?