The simple thing is that to get the position of legendary member it is require to have a particular number of activities at the same time the the particular amount of merit.
But this is the beauty of the process of becoming a Legendary that you don't know the exact activity nr. required for you personaly. So this is somehow mystical and this is the beauty of it. I wouldn't change it, and anyway, nowdays it's not the activity but the merit that determines who can be legendary and when...
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