The only objection I have to this is that sometimes, an admin makes a mistake (say, for example, a 3RR block when in reality, only three reverts and a legitimate edit was made). I've had editors contact me wanting to contribute to Wikipedia, but find they can't because of a wrong blocking. In these cases, I usually go ahead and unblock them, and then leave a nice message on the blocking admin's talk page. Any other delay due to communication between admins I think is unfair to the blocked editors.
Given the way most people reply on listservs, I can't blame you for not seeing this yet, but I've already addressed this concern in my 1RR edition :)