1) this belongs in Site Feeback since it's a suggestion for gaia.
2) It's impractical. With an avatar you can take a few seconds to look it over and decide if you like the outfit. Out of a random, say, ten avatas (both male and female) you can take less than a minute to see which avy you like the best
with a guild, you'd have to take into consideration the layout, the graphics, the text. etc etc etc. It's too timeconsuming and we all know the admins have so little time as it is.