I completely agree and have posted that exact suggestion in this forum over the last several years. Up to and including false accusations of rape, murder, and other such crimes.
Plus, I would also double the sentences (whether for false accusations or for true accusations of actual crimes committed) for government agents, and triple them for facially hypocritical government agents, such as when drug enforcement officers are found to have been selling or doing drugs.
Hanged by the neck until dead. As an example to the others.
Sure would change the attitude of the DMV types.
/johnny