The Layer manager should be expanded in functionality to allow easier editing of pages, layers, Objects, and should operate hierarchal tree-style
When you only have a few objects on one page it's not really needed, but once you have enough objects that you can't easily just click one on the page, it's time to have an object manager in a hierarchal list form. A pro can't be meticulously placing objects to spec, only to have to move them around to change the color of something 4 levels back... so much time is wasted... but if you can click the object on the list, and change the it's properties without altering other objects, you don't lose much time at all.
Toggle buttons at the top of the manager window would select which level the artist is operating on.
The "Page" toggle would allow the artist to change the order of existing pages and to add "Intentional Blanks" as well as apply master pages
The "Layer" toggle would be as it is now, but also including a Master page layer, Marks layer, guides layer.
The "objects" toggle would list all objects, sorted by page,layer, and group. Selecting an object name in the manager would be the same as selecting the object on the page allowing the artist to interact with it, no matter which layer, page, or group it's on or part of, and no matter what objects are above or below it.
This feature as I describe it is MOSTLY based on the Object Manager in Corel Draw 12... I have not used new versions of Draw so they may have advances I am unaware of. My description varies from it's functionality though in that, Corel Draw 12 did not allow more than one master page set... crazy I know... and their page re-ordering was a separate function found in the menu system