1. base com controller: adder buttons for all component variants (children)
2. base formCreate action
3. basic access control for create/edit forms via User\Entity::can()  method
4. livesearch action goes to basic com controller
5. loadFromForm implementation for content (uses setFieldValues() instead of set() )
6. component relation for all content ( com entity available via $content['component'] )
7. tree methods goes to basic content finder from Page/Finder.php