It's a bit silly and cliche, but I imagined all of them coming together, fighting and not getting anywhere with Raditz. Then they all get together for one final attack and beat him down with one massive move. Like putting all their energy together and firing it at once at Raditz. *shrugs* Not that I'm expecting it to be that way, nor is it the only thoughts I had about it. I'm sure Primarch has his own thoughts about it.