Hi Router
Well i'm not claiming that weighty brain that you're asking for but i'm just wondering what other covenant stipulations KCs violate.
The only other possible offender i could think of would be scripts but if your landowner would care to check them out he(she)'ll see that KCs have an extremely low script count.
As for having a phantom option the drawbacks are obvious i think but i'll leave that to the weighty brains around here, as mine is far too lazy right now.