This game is honestly incredible, from the UI to the designs to the range of possibilities! It's hard to ask for more from a 3D dragon creator... but I managed to, lol. Here are my suggestions, in order of how much I think they would benefit the game:

1. A randomizer. I think a randomizer would be fun and would help new users stretch their creative muscles. These are ALL of the dragons I have made randomly, using an RNG for sliders, blindly cycling through options, and then coloring manually (which was A LOT of fun). I'll let the results speak for themselves.

Perhaps instead of colors being completely random, dragons could have randomized palettes. Or maybe truly random colors would be more fun, who knows?

2. Layer rearranging. Sometimes I'm like 'oops, this gradient should be under the stripes, now I have to do a bunch of work.'

3. Make it easier/more clear how to save edits to a design. Once a code is generated, a new one can't be generated until a code is loaded in. So you can copy the generated code and enter it to reset the code generator, but you have to remember to do this before making edits

4. Undo button. Wouldn't have to go especially far back; even one step back would be nice to have.

5. Camera panning. Could be achieved by right clicking or holding shift while clicking. Probably would have to be paired with a camera reset button.

6. Eastern dragon style whiskers and beard.

7. Fur options for "attachments."

8. Wing width/length slider (could be either since there's already a size slider).

9. Spiral horns, not like ram horns but like, kudu horns?

10. Spikes for cheekbones/eyebrows (around the eyes basically).

I don't expect you to implement any/all of these, but I hope they at least offer inspiration!