Eliminate all victimless crimes in their entirety. If no third party is harmed or unreasonably endangered, there shouldn't be any reason to fine or incarcerate someone. This basically eliminates all 'possession of' crimes that are so often misused by police to inflict all kinds of harm. (Good example being getting arrested for some marijuana in the car leading to car impound and ludicrous fees to get it released.)
That said, these laws are complex. [0]This is a felony scoresheet from Florida that shows how things get tallied up. Looking closely you can see the extreme impact of plea deals in sentencing, and the way multiple charges get added together.
Jury Nullification is one such example. Threats of life in prison (even if innocent) unless you plea down to a lesser charge is another.
(I do agree it would be great for our laws to be more readable, but I don’t see how society could function with as low a limit on legislation as you’re suggesting.)