Tanks and Crit Avoidance Mods?

I like to save my good crit avoidance arrows (the ones with speed secondaries and other useful secondaries) for teams/characters that get bonus crit avoidance from another source as well. E.g. The CA on traya, Carth and qira teams combined with the crit avoidance arrow is really meaningful (can get up to 95% for a tank on a qira team). The CA arrow just on it's own I find still to be a bit lackluster vs a protection/health arrow with great speed secondary or just a straight up speed arrow on the ones that @VonZant outlined need some speed to be useful.