Feature Request for CMS Builder

Are there any plans to add the User Access Levels such as Writers, Trusted Writers, Editors as in Article Manager to CMS Builder. We really need to have the approval process that Article Manager supports before we can use CMS Builder.

I hope this is something that may be added soon as the additional flexibility that CMS Builder offers will meet all of our needs.

If this is not something that is going to be added to CMS Builder, can both Article Manager and CMS Builder both be used on the same site concurrently?

Thanks in advance.