MultipleViews

IContentPart.cs

public interface IContentPart { } 

public class TitlePart : IContentPart { // whatever else }

public class BodyPart : IContentPart { // whatever else }

MyFubuRegistry.cs

public class MyFubuRegistry : FubuRegistry
{
    public MyFubuRegistry()
    {
        // other stuff
        Views
            .RegisterActionLessViews(token => typeof(IContentPart).IsAssignableFrom(token.ViewModelType));
    }
}

PageContentType.cs

public class PageContentType
{
    public TitlePart Title { get; set; }
    public BodyPart Body { get; set; }
}