After entering a contest where I had to create an avatar, I realized how helpful this could be, just considering that we can't save outfits that contain items that we don't have. This way, we still couldn't save the outfit as in wearing it, but we could save dream avatar designs that we've posted on a thread. I mean, if you really wanted to, you could go through the URL that you post on a thread and copy and paste the color codes, but why not contain an easier option?

It could work just like the "Load Design from URL" button in the sylesi generator.

To start off, I have to say I like your idea :) but at the same time I don't think it would be implemented.
Because people wouldn't really need to purchase outfit slots anymore if they can just load outfits easily. Users can simply save a complete outfits url and load it later.
(Unless outfit slots would be free, then I think it would be fine)