There’s a good (long) thread discussing much of this: What technology can be used to improve the pinball viewing experience for the casual observer?
Besides having entertaining voices/characters on the mic, and knowledgeable people on the mic, the one element that I think we should implement ASAP for every commentary team (even ad-hoc ones) is establishing roles: who is going to do the play-by-play, who is going to provide the color commentary (on the players, the pin, or the event), and who is going to interject aspects of the tactical and strategic choices that players did or didn’t make. It will lead to less interrupting / talking over each other between commentators (which I’m guilty of as well!)