Allow members to see a list of people on whose whitelists they are on

Not at all necessary.
Lists of friends makes enemies.

Trying to build a whitelist at the time, so this could be handy... maybe... who I'm trying to fool, I'm not popular.

Not sure. On one hand, you find it easier to make your own whitelist. On the other hand, you start wondering why you aren't on someone's whitelist.

don't fool yourself, nobody likes you

this

hey! why am i not on your whitelist?! i thought we were buddies?! you goin on blacklist right now!

Hiding blacklists makes sense to avoid unnecessary drama, but showing whitelists couldn't hurt.

I'm amazed I have ended up on some people's whitelist. Because mine is random and pointless I like to cross whitelist those people... So this would be useful for me...