I Sent to Kyle Linden at Second Life but I don't think he got the message.
The trouble with SL is that it is too hard to come up with a great looking avatar. As it is, you find somebody who looks good, do a 'what is she wearing' and you get a list of heads, bodies, and such to work with. Then you have to figure out where to buy that stuff, but before you can do that, you have to search for a store to sell it. Then once you get to the store, there are choices to make on various options like skin tones and such, and you wind up having to assemble the head/hair/body/skin/shape combination, and you might not be satisfied with what you have got, and you have spent HOURS and a LOT of Linden$ doing it.
The way it should work is that you go to some AI Avitar shop, tell them what you want such as (I want to look like the avatar of XXXX, except with blond, hair, bigger boobs, and a more petite shape), they propose several alternatives and you choose one that suits you, then you pay them the Lindens and you click a mouse, and bang, you have a new outfit to wear.
In other words, a way it should work is you show them a picture such as
https://www.deviantart.com/eroticangels/art/erotic-angel-jpg-8-973007148
and they figure out a head/hair/body/skin/shape combination that suits you, and if you like the picture of the demo, you buy it. The AI Avatar shop could make their money by getting a commission from the businesses selling the head/hair/body/skin/shape stuff.
The perfect way it should work is you tell the AI that "I want to look like Taylor Swift (or Tom Cruise)", and it generates the mesh stuff, shows you six pictures to choose from, you click on the one you like the most then it fine tunes the choices and shows you six more to choose from, and after you have found the one that you are happy with, then it goes into the clothes the avi will wear and other accessories, you pay the Lindens, you get a box to open, and put it on and be happy.