| Why don't you make it a growing project, so rather than build a museum and put in x number of people, start it with a small amount - say 3-5 exceptionally notable people - and then over time, and with further community feedback, add more people to the legends list.
It could even become a periodic community discussion/vote on who to add, and each time one is added it may end up provoking some pleasant nostalgia and discussion with the community.
Criteria to be in the the list has to be thrashed out, it's really the thing you need to start on before you can add the people to it. If you are having trouble finding the criteria, look at the dead-certs you've got and consider why they're there.
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