基于复杂模块使用ASP.NET MVC 2在DB中创建新记录

I have a very tough problem for me to solve, and I thought and searched alot and came down t one conclusion which I will mention down. the problem is I have a client that wants to create a websites based on a Common functionality, so let us call it Modules, so what I thought is to use MVC Contrib Portable Areas, which are great ideas to plug Modules, but I have a big problem, let us say I created a Blog module which will be implemented in a new site he want, now some users have unique requirements like one of them needs to add Gallery of pictures to each article, or List of references in each article. this would be easy in normal situation where you have one site to work on, so all what you have to do is I have a very tough problem for me to solve, an