I agree that BANG could be used very well as a team name. If you do make an abbreviation for that I would avoid using any sort of expletive even though some
companies do (they actually did some work at the business my mom works for that is how I know them).
I think the sexual connotation you are worried about with bang as a singular term is starting to phase out, attach an -ing to that and it is more likely to have a sexual connotation though.