http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1288431-just-another-spawner-jas-v0-14?comment=1546

Technically useful feature. Unsure on viability of removing name (or alternatively effectively implementing anonymous biomegroups).

If implemented, renders actual biomegroups redundent to attributes and one should probably be removed. Though that leaves problem of default biomegroups to generate. Removing the dictionary attributes and make them keywords that automatically update would be viable.