If you need a tournament to get attention as a council member, I'd say you're not doing your day job right :p
That's not really the point. Even if you are doing your job right and don't need extra attention, it may be fun to participate in tournaments and relax a bit.
I remember Tom mentioning that it wouldn't be realistic for Kings to participate as no one in their right mind would beat them, people would just fold. Taking that argument to its logical conclusions, however, it's Dukes who should be banned, and not bankers.....