I'm interested in something similar, although I was thinking about just having something as simple as tags for different icon makers. Something like: "maker: username/community." So for me it would be "maker: ocarinas/sacredrealm" or people could identify with just their username or just their icon community name.

The downside is that using tags for icon makers decreases the amount of tags available for canons and such. Although I have no idea what DW's limit is for unique tags.