It would be cool and more userfriendly interface while editing if we create seperate categories rather than modules & layout. In my opinion if we create modules in following categories:

Structure, Media, Social, Commerce, other

In this structure (currently layout column structures )
In Media ( Images, Audio, SlideShow, Video, Gallery )
In Social ( Facebook Likes Page, Twitter, Share and More )
in Ecommerce ( All Microweber ecommerce tools)

How it will look:
https://imgur.com/a/ZPE0b