Created attachment 134536 [details]
How I think it should look like.

Hello, 

  I'm a PHP developer. Very often I find myself navigating through multiple methods that are part of a collaboration diagram. When you use "program by Intention" you end up with many nice methods and then, when refactoring, you need to check the parameters you send in the call chain. 

  Here, the plain method list that the Navigator windows provides isn's as helpfull as it could be. It'd be GREAT to be able to navigate methods by seeing their dependencies/collaboration. like in the attached picture.

  You should be able to:
    * Select one or more root methods on each class, so the graph can start where you expect it to do it. (In the picture, getContentMedios() )
    * Select the deeph you need to see on screen. (In the picture, 4 levels)

Thanks! 
Juan Fernandez