That's also bad. Prosecutors hold a huge sentence over people and compel them to confess - it's a kind of hypothetical torture, forcing you to confess by the bad stuff they'll probably do to you.

Prosecutors, along with their investigators, should come to a position on whether a party is guilty and if so what punishment they deserve. They should then make that case in court. Courts would need much greater throughput to handle this, but the current method seems much worse.