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That’s an interesting call, but not likely to happen really.
I’ve crossed @piggy’s full profile DB from December 2018, and crossed it with current full merit TXs. It turns out that:
rank nEarnedMerits nUsers %
Legendary 0 959 43,24%
Legendary 1 229 10,32%
Legendary 2 107 4,82%
Legendary 3 80 3,61%
Legendary 4 51 2,30%
Legendary 5 54 2,43%
Legendary 6..10 136 6,13%
Legendary 11..50 368 16,59%
Legendary 51..100 114 5,14%
Legendary 100..250 76 3,43%
Legendary 250++ 44 1,98%
Total 2218 100,00%
That is to say, 43,24% of Legendries have not earned any merit to date, and an additional 10,32% have currently only earned one. Only 27,14% have earned 50 or above merits.
90,30% of Legendries have been active (*=at least logged-in, but we do not know how active they have been) from 2018 onwards, so the above data is representative.
Edit: Heroes show rather poorly: 70,10% lack any earned merits, and Sr. Members are on the 81,80% range, although both sets have been active (*) during 2018 in somewhere near the 78% area.
If we delimit the data to those active(*) during 2018 we get 62,28% Heroes lacking earned merit, and 70,85% Sr. Members in the same situation. I guess we never see those around much.