Why would you want to know who got a temporary ban? As far as I'm concerned, that's something private between the user and the Mods.
By this, I can know potential shitty posters, unreliable guys, etc. Of course, forum users should be responsible on their judgemements on reliability, quality of others (they should spend their own time to find out), but if the forum can have a badge, which plays a role as early signal for newcomers, who don't have enough skills to do this, it might be great.
Recently, @Theymos has raised a badge 'contest' to find the most relevant for reporters.
Hence, I think it might be relevant to have a specific signal for temporary banned account, too.