Yeah it seems there are a few of us, however no-body seems to want to touch it ..... Wish I had the skills to tackle it myself however its a little beyond me at present .... Although I believe its the functions_ranks.php file that would need to be edited if I'm reading it correctly
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Posted this as a reply over at vbulletin.com to a previous suggestion topic, and it seems it's been requested as a feature of vbulletin on quite a few occasions. Personally I find it quite bad that it wasnt part of the original system as it seems to me that it's quite obvious when setting them to be in the order of an 'id' that it makes the order very 'random'.
http://www.vbulletin.com/forum/showthread.php?t=170161
This is the url of the thread I replied to..