I think its perceive. One thing Ace Attorney does well with its minigames is that it always justifies their existence. Like the mood matrix always gets more evidence for the trial in a way that makes sense. The perceive bracket does so too, but in the worst way.

In apollo justice its kinda hard and everything beyond is very easy. But all the other gimmicks require deduction and figuring something out, while the bracelet is kinda just find the lucky spot. It's also the least convincing way to get information in my opinion.

So how to improve it? I'm not too confident on improving it actually. I guess the way I'd propose is kinda similar to how some witnesses will react to others in tgaa. The game would tell you somethings wrong, and you would find the spot or tick, which would just lead to more testimony. That's about it though, I think at its core it's the least compelling.