I would like to point out that the normal, capital only guardians also get the same affect in a different way. Look at their halberds, they fatigue sacreds which is really powerful.
Also the advantage of black priests is something you are overlooking, they are holy2 which is a big deal for ulm which didnt have that before. And the Priest Smiths can cast very powerful versions of the new Ulm only evocations because + path bonus.
And The Iron Angels a great thug right out of the box, and any items you give it make it just that much better. Overall I would say these changes to make a difference. Explore more
