It must be an extremely disappointing feeling for a highly active and a fairly contributing user to find that he is banned for a period of 6 months or one year or more. Given that he will be eager to participate but he can't and for such a long period of time.
Probably he may not even feel like coming back after the ban period is over.
I understand that the ban reasons must be quite substantial in such cases and which of course are to be kept between the user and the moderator concerned.
Suppose, the user feels that he was banned for wrong reasons. Can he complain to higher moderators right now. Or will he have to wait till the ban period is over?
Were there instances where higher mods have actually reversed such a local mod's decision?
What if he creates a new account now in an urge to participate again? What will be done to that new account? And what will be the effect of this new-account-creation on the original account when it's active yet again?