I understand what you mean by your suggestion and I think that having the Bruiser's Bat could be fun at times, but I don't think it would be for the best.
The Bruiser's Bat's functions from the Quabbleball game are not ideal for outside the game and do not fit the gameplay we want on Potterworld. Also, it is an item that doesn't necessarily make sense to have outside of a game of Quabbleball and because of that, we're not looking to have it sold with the flying gear.
Thank you for your suggestion!