I don't pretend to know why people are freaking out over the new rank. It seems that it could be a benefit for some and not for others which happens in every MMO.
My question is, if the 'Super Leader' can demote themselves down, why not establish a round robin for the rank? This is where the founding members all get the title for a specified time. It is not saying that the Super Leader works harder or does more or is more well liked, it is just using it as a spot light of sorts to bring that founder into the spot light for a specified amount of time chosen by the other leaders.
This solution however does require a large level of trust. If you are worried that a founder or co leader will abuse their time as Super Leader, then this would not be a good solution for you.