I remember that back on live, I was very fond of eq rankings because it helped me getting a goal and some different ideas of what to get. Of course the allaclone is also useful since you can browse the loot table of mobs, but it's not the same, especially when it comes to augmenting. Some people have brillant ideas whereas some others have none ^^
Yes you can also have a direct link to magelo via the "who is online" or the "guild progression", but for not so experimented players, they don't always know which warrior is non donored, or only one donor, or so...
Of course, the donor system makes the eqrankings a bit wierd in a way, because they would be at the top all the time, but still, it's a way to get a larger picture of people fighting around. Maybe there would be a way to filter people by donors too (1,2,3...20) like you do on ac or hp or mana.
If it's too hard, too long or too painful to code or create then I'd rather gms keep their awesome job creating/customizing/adjusting stuff in the game but, I find it interesting.