All the successful solo sites using Elevated X (whether models or branded Pornstars) generally have these things in common:
1) The involvement and interaction of the model
2) The quality and amount of exclusive content
3) The exclusivity or originality of the content e.g. shoots based on fan suggestions, behind the scenes footage, etc.
Marketing angle is secondary to all of the above.
Here are a few examples of Elevated X CMS powered solo sites that consistently do well:
http://www.jelenajensen.com
http://lisasparks.com
http://www.courtneycummz.com
http://www.ariagiovanni.com
http://www.kayden420.com
AJ