It's not that big of a deal really, if the talents werent scaled down and level 15 priests were doing 40k dps halo rings it would have been hotfixxed, I assume they're more looking into making sure whatever code was used here wont be able to be abused in other ways later, the fact that an addon which is supposed to only manipulate things client side means theres currently no server checks on talents and I wonder what else, I know at one point in a ptr build you could mount any mount by using /cast mount name, because there was no check server side if you had it.