It would be interesting to bring a vampire (a person in costume, of course) to a business takeover negotiation meeting, just standing in the corner with fangs and a cape, looking menacing. It will either intimidate the other guys or make you an object of ridicule. Either way, it would shake things up a bit.
Mokalus of Borg
PS - Whether the change goes in your favour or not remains to be seen.
PPS - And I think you'd have to play it pretty straight.