>Law ... monstrocities
We already have that, though, and "sufficienty written" is a very dangerous standard.
The easiest way to guard against "all" malicious input is write a vague law without clauses that demand mens reas, which means that regardless of whether or not you knowingly broke the law, by violating its provisions, you automatically did.
The leeway to "serve justice" also tends to be the leeway to condemn justice or to interpret law in ways it was never designed to account for.
The lawcomic, written by a lawyer, has a good section about the kind of overcriminalization you're discussing:
http://lawcomic.net/guide/?p=1031