Two proposals.
I'd suggest renaming "temporary ban" to "suspension." Suspensions can be made, lifted, renewed. Bans are permanent. Just a language thing. It might better frame expectations and fears and avoid casual status confusion.
When we suspend someone, let's be clear about giving specifics about its end: end dates and/or specific conditions to be met. The clarity should drive better behavior and induce more suspendeds to try to restore harmony.