Scion said:
But you do still 'have' the feat, you just cant use it.
I understand your reasoning, Scion. I don't even think it's bad reasoning. I just tend to follow a different line of thought on this one.
IMO, "having" a feat means having learned the technique. Having the knowledge, as it were. But you have to be able to
use a prereq feat to use one that builds on it, because it's not just the knowledge that is being built upon, but the actual maneuver. To Cleave, you are employing a modified Power Attack. If you
can't Power Attack, for whatever reason, then you can't Cleave. It doesn't matter if you still remember
how to Power Attack. You can't do it. Whatever's stopping you from doing a Power Attack also stops you from doing a Cleave, because a Cleave
is a Power Attack, modified or improved in some way.
Perhaps if feats weren't so linear, I wouldn't feel this way. But to my eye, nearly every feat chain works this way. Mounted Combat grants greater mount control, to the point where you can avoid some attacks through fancy riding. Take that a step further, and you can use that fancy riding to prevent attacks as you ride past your foe while attacking. Learn how to do that, then adopt a more complex stance during the attack, and do extra damage all the while... Mounted Combat-->Ride-By Attack-->Spirited Charge. Again, each feat builds on the previous feat's operation. If you can't do the fancy riding of Mounted Combat, then you can't perform the complex stance necessary for the Spirited Charge. Everything is based on the foundational feat. Without it, nothing else works.
But as I said, this may be a House Rule on my part. I understand your reasoning, and I see how one could differentiate between having a feat, and being able to use it.