Add the ability to add notes to individual Content Blocks

Hi guys. SlickPlan allows the user to add a note to a page, but not to individual Content Blocks. It would be super-useful and would greatly aid collaboration on a project if, for example, when an image is added as a Content Block a Note could be added such as, “Create an on-brand illustration based on this image”. Or another example of a note on a Rich Text Content Block could be, “This table will be embedded using embed code from ThisApp.com”. 

It would be great is the comments were displayed on the right-hand side of the screen as they are when viewing an uploaded Mockup image.

Thanks!