Any player inactive in the last three games of any tournament is deemed to be out of the league and can only return as a new player in an expansion or bottom group.
For now this rule applies. This means Old Surehand must start at the bottom, and HHH still has a chance to show he's active. Though HHH just booted from 2 games so chances look pretty slim.
Any rule changes would have to be made starting next season. However, there would have to be more than one player interested in changing a rule for there to be a chance of it being changed... and managing inactive players seems like a lot more trouble than it's worth.
My personal opinion: The current rules reward activity and punish inactivity. I see no reason to change them.