Well then, that's great motivation to not ever consider using hacks.
Surely, having a wall of shame list or separate user group is a great deterrent and better than doing nothing at all by enabling their behavior. Maybe it doesn't have to be done for previous bans, but let it be the norm from now on by announcing it to let everyone know the new consequences of hacking. If they still choose to hack, they bring it upon themselves to get bullied or insulted by legitimate players (happens even now), which the FMs can take care of when required.