adaxe

I am pretty sure that Ectophysic Echo didn't damage allies in 1.04.

Mechanic skill has no effect on priest seals. Tested in game.

I doubt so... It seems that well more than half enemies in the bestiary have higher fortitude than they do deflection, even minus 20. And information in game says that "a sickened character has all attributes reduced by 1. Fortitude and Will are reduced by 10". So it is 10, not 20.

Brute Force: On attacks that normally target deflection the barbarian will instead attack fortitude if it is the lower defense. I just checked the bestiary both in Hard and PotD, and found that most mob (maybe more than 75%) has much much higher fortitude than deflection. So I think this ability is quite useless, even with Threatening Presence.