Show previous SG nicknames for people that changed them

Well most of you know that you can change your SG nickname once every year. This, in conjuction with the ability to change our Styeam profile picture (which then moves to SG too) can really make someone unidentifiable. So (as proposed during beta) I'd like to be able see a member's previous SG nicknames, as well as the periods in which they used them.

<removed part of original post so that only the suggestion is discussed>