Bragg's biggest problem is that in 99% of his cases, his opponents don't have the resources of his office to spend on fighting him.
He's now picked a fight with one who does, and it's not going to go well. One of the things that always fighting the guy who doesn't have the resources to fight back does, is that it makes you lazy. Bragg is about to discover that laziness won't cut it here.
Im not sure Bragg even cares whether or not it goes to trial, or simply the bottom of the trash can. I think he is just trying to goose his own political ambitions.
"Im the man who brought charges against Orange Man Bad, when no one else could..."
I would say he has visions of Mayor, or Governor.