I should be able to disambiguate my Members
Summary: See details, but the tl;dr is that it's hard to tell which member is which.
From Eric:
Many users have multiple entries. Whether or not this is user error (signing up multiple times) isn't relevant; what matters is that when I go to, eg, assign permissions to someone, their user name appears three times and I don't know which to use. Or, if I'm assigning a Role to the user, I need to do it for all three. And either way this opens up a security problem; all someone has to do is register with the same display name as someone else and it's easy for me to get confused and give them permissions. My preferred fix for this would be a robust Profile system (and perhaps giving the Space owner the ability to require that display names be unique - it's a headache when they aren't), but any sort of "I can click through from the Members list to see some sort of disambiguation (last login, comments made, Things created)" would be good.
I'm not sure that there is a plausible way to ensure that display names are unique within a Space without a potentially-sucktastic user experience. But being able to click into a Member and see more information about their activity seems entirely reasonable.