If this change leads to skills/spells such as Tiger claw, hurl throat,
and deafen have the chance of potentially causing spell failure on a
mob. (Even if it was just a small chance, it would make those skills a
little less useless against casting mobs).

I know you have stated before that you really don't want to lead in
that direction, but even having a 5% or 10% chance of spell failure
would make it cool.

Just a suggestion. Keep up the awesome work! ^_^