Perhaps you shouldn't have been so quick on the draw.
FWIW, I seldom veto so, when I do, it has to be amazingly craptastic. Therefore, no explanation is going to change my mind. I'd suggest explaining your deal in the WC if you think it looks veto-worthy. Or, if it looks veto-worthy, don't do it. That said, I see no reason to crap on this idea.