I'm pretty sure every charge save Minor in Possession pivots on whether or not Rosenbaum was self-defense. If Rittenhouse doesn't kill Rosenbaum, none of the other events occur. No McGinnis in the line of fire, no pursuit, no Jump Kick Man, no Huber, no Grosskreutz. All the defense has to do is successfully paint that as self-defense, and it knocks out all of the major charges at once. Conversely, if the prosecution can disprove self-defense, then their claims of concerned citizens shot as they tried to subdue an active shooter all have a chance to stand.
And I think both sets of lawyers are assuming this. Binger's fight to disallow from the record anything that may paint Rosenbaum as mentally unstable, violent, or with a criminal history has been to preserve the story that Rittenhouse stalked and murdered him. At several points, he has acted like Rosenbaum is more his client than the people of Kenosha County are, because if Rosenbaum was in fact a violent psychopath who was shot after chasing and cornering a kid with a rifle, then every other shot Rittenhouse fired was justified too.