I think that users with 2-3 badges + auths, should be able to get customized avatars. I don't think it is too much work, or if it is then i am sorry lol. Ps has this as well for many users, i thought it could be optimized here as well.
I actually like that feature in PS and I do believe it's worth giving a shot, however unlike PS avatars are stored in a database for everyone in the client, so i'm not sure if you could actually do a personal one :v Gimme Diancie with a cute gril pls