Is this really for the benefit of the person suspended? Surely it's better in general to let them choose whether to make this public?
That depends on how you value transparency. In the US, for example, transparency is everything -- and it hurts _a lot_ of people.
I think it might be appropriate to vote if you disagree with the suspension with or without the identity of the offender but not releasing the name seems trivial if not even appropriate to me.