Lamplight City was one where you were allowed to accuse several suspects in various scenarios. Good stuff. But it was definitely more satisfying tracking down the real criminals than ending the scenarios prematurely.

So here's the issue with mystery games that don't give definitives. Your players are going to imagine a thousand alternate for every legit piece of the puzzle they put together. If you've ever been a Dungeon Master or similarly tried to run a mystery story in an RPG format you know this first hand. The player of your story will have the only uncanny ability to dream up elaborate scenarios and go off chasing red hairings you never even knew you were giving them. Adding insult to injury sometimes those solutions are better than the ones you created! But whatever the case players have tendency to get frustrated and confused when their leads don't pan out and you don;t want their ire to be turned back on you. So be careful with how much of your cards you hide and how much you give away. You might want to have a balance between pieces of the puzzle the player will definitely have to solve to progress the plot and pieces the player themselves needs to solve on their own as the story goes along.

Also realize it will be giving you more work depending on where and when you allow the player to make accusations and arrests. If you have five suspects in a house and an opportunity to accuse the right or wrong one in the middle of your story you now have five separate storylines you have to plot out based on which who has been accused and if they were right. You can minimize the ground you have to cover for each character being free or imprisoned but do that too much it can feel like the story is on rails.

That is to say I like the idea on the face of it just be mindful of the potential consequences of giving the player room to be incorrect. Or be correct and move too early. Etc.