Permaban should only apply to people who are fakecels, braggarts, discussing illegal stuff, etc
There should be account limitations on other types of criminals. Such as a post cap. Or only being restricted to a certain subforum.
If not Mods should just give a long ban like several months so the convict can think about what he did wrong and hopefully mature a bit before submitting to the Mods. A long layoff is usually what petty criminals need to fix up.