Volkmar has lost his ability to reduce the cooldown of his warrior priest abilities. Matching greatsword buffs with demigriffs makes it so previous investments in empire infantry are a waste of points. Empire generals are now effectively only a vehicle for griffons. Arch Lectors gain all the same skills but have warrior priest abilities and abilities to buff flagellants. Its all Empire focused stuff but all relevant.
I would like empire generals to have a set of skills Lectors can't get to match the fact lectors can buff flagellants. I guess the warrior priest stuff balances against a griffon. Infantry skills shouldn't pair with cavalry ones. I finish games without demigryphs and now they are tied to greatswords, an arguably essential late game unit.
Volkmar is a Arch Lector with a war altar and slightly different stats. I can't imagine that was a goal.