He he. This! 6+OldBlood+ScarVet is a wrecking ball with 16 legs. Throw a little ASF (or ASL on opo) magic into the mix and its butt-pucker time for your opponent.
The funny Thing is that I have an empire friend who would love to get cavalry with 4 attacks at S4 for each rider and I would love to have AS1+ and lances. Overall I think COR are fine, however the grass will always look more green on the other side
The Demigryph/Monstrous cavalry thing is a red herring. IC knights are Core choices. You don't have to choose one or the other.