What I wanted to see was as follows:
Source files available for purchase, this is VITAL even if newbies aren’t gonna use it. You get the avi ready to go immediately and can customize it later. Win-win for newcomers (who then have the files when dipping their toes into Unity) and enthusiasts (who have less barrier to entry to purchase avis).
Or at the very least a code generation system that could give you a download or discount code on Booth/Gumroad/etc (I saw some people talking about charging less for the svi without customization, and I like that idea but think there should still be an avenue to full customization without buying the avi all over again).
I really wanted a VRCFury style modules system that would let you buy clothes, skins, etc and attach them to a purchased avi, allowing for easy customization by newcomers. Some would be exclusive to certain avatars (e.g. a Novabeast clothing set would only attach to a Novabeast avi) or global (e.g. GoGoLoco). Bonus points if this could be done on the fly so a player could quickly pull some performance intensive toys (e.g. Liindy’s excellent wares) off their avatar to lower its performance rank before going clubbing or something.
All Very Poor avatars should be REQUIRED to offer a performant version by default. I think we’d all be better off that way.
I think all of these could be implemented in the future, and certainly hope they will, but for now the avatar marketplace will disappoint newcomers due to lack of customization, and disappoint enthusiasts by not having access to source files.