Yeah, I noticed that when I tried modifying skills at first and got an ability to match my weapon range, so my archer stood still, held her arms up, and had the focus sphere glowing above her head.
But I don't know what that's about either. I haven't tried deleting any Rend skills; haven't wanted to. My weapon attack attempt was a copy of a Rend, with the formula, status, MP cost, and JP changed. Another try was the same thing, except I didn't make any changes to the MP cost...
In the end, I just ended up using some of the quicker, simpler monster animations.
But I don't know what that's about either. I haven't tried deleting any Rend skills; haven't wanted to. My weapon attack attempt was a copy of a Rend, with the formula, status, MP cost, and JP changed. Another try was the same thing, except I didn't make any changes to the MP cost...
In the end, I just ended up using some of the quicker, simpler monster animations.