I have two thoughts.

1.  It needs to be something anyone can use.  If you have a  dragon figure that everyone would want at the price they want, it'll be mainstream.

2.  Why does it need to be mainstream?  If you do it as a labor of love or something that you want and you manage a little money back from it, that should be a good thing.  I haven't modeled in almost a year, but when I was, I was making things I wanted or needed first and foremost.  I think that should be goal one.

If you try to make mainstream for the point of being mainstream, you'll probably fail in some respect because your initial focus is wrong. 

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)