I can't think of a real one. The only good reason I can think of for all the original members of a band to reunite under a different name would be if they had l

I can't think of a real one. The only good reason I can think of for all the original members of a band to reunite under a different name would be if they had lost the legal right to use their old one, like when Prince became the Artist Formerly Known As Prince. It happens to solo artists from time to time, but I can't think of a band example.