I would request you to please have a look at www.pagecloud.com as a platform to edit the cs-cart based website its similar to live editor but much more extensive than it. I was happy to see some one thinking about how to change the website building process and provide such a great solution.
It would be really awesome if you could synergize the pagecloud framework with your live editor to make changes on the fly for a dynamic website then no templates for website etc will ever be required I know its easier said than done but it makes sense to explore this option. it will really take the cs-cart framework to the next level with this kind of technology.