Server specific avatars

Just reinvigorating this subject, as I've seen it come up now and then. A lot of people these days use Discord to play through RPG sessions, hosting channels dedicated to individual games and scenarios.

It would be great if in addition to the server-specific nick-names, we could upload our character avatars there as well, so we don't have to constantly go in and change our avatar (many of us do that twice or more each week as we switch between game sessions).

I know, too, other people have wanted this feature because they'd like to have their real picture displayed in channels for family and friend chat, for example, but would prefer not to use it for public channels.