Plea bargaining shouldn't be completely thrown out. It provides a way to save costs, gives prosecutors an important tool bring down criminal organizations by allowing them to bargain for testimony against the principals from peripheral members, and gives defendants who are genuinely remorseful a way to reduce their sentences.

But the Supreme Court should take a look at where the Constitutional boundaries for plea bargaining practices lie. Having a maximum multiplier would be a good idea: If a plea bargain for N days in jail is offered, no more than 3N days can be sought at trial. (Of course there has to be some way to convert different punishments into equivalent "currency" for this conversion.) The point is to keep defendants from pleading out due to pure risk management considerations, which makes a mockery of the justice system by turning it into a high-stakes poker game, and deprives defendants of due process by coercing them into giving up their rights.