A cannon seems redundant as most vampire lore allows them to fly or transform into something enabling flight. Maybe a cannon is for rapid deployment of vampires? The question then is how do you prevent immolation during firing?
Best to worst what? Player type? Star Wars character? As long as the player type vibes with the table it's all good. As far as Star Wars characters Hondo and Chopper are two of my favs.
Me: fireball isn't the answer to everything
My son: No?
Me: No. Fireball is the question.
Son: Fireball is the question?
Me: Fireball is the question and the answer is yes