As dumb luck would have it, shortly after this gets published the Superior Court judge in Atlanta (Fulton County) granted split trials.
https://www.nytimes.com/2023/09/14/us/trump-chesebro-powell-trial-georgia.html
This doesn't change the fact that Willis is smarter than the semi-lawyers helping Trump out.
It may in fact, help her, because the first trial (set for October) will sail along very quickly without the multiple delays that Trump's team will be trying to delay the inevitable.
Getting the October convictions will only help her with the other ones. And she will get them. Georgia district attorneys don't lose many cases, and they're sure not gonna lose this one.