Edit Original in context menu Placed image
Just like other CC applications, Ai should offer the possibility to open the source of a Placed image directly from within Ai. (Photoshop most of the time).
Jan Vork shared this idea
If you have Control panel displayed, there is an Edit in Photoshop button there.
If not — there is a 'pencil' button that does the same in Links panel.
But there is none in context menu, here I agree.