I would love to see the option to transfer a group to another person.
Plenty of times groups will die because the leader of the group goes inactive or they just can't control the group anymore. I think that if an owner of a group knows that they will be unable to keep the group alive due to inactivity they should be able to transfer the group to another person without having to disband the group.
I know that this could be a very difficult task, but it would be awesome to see in the game!