Folders/categories in object lists

I’d like to have folders/categories in object list (both global and scene objects). This would make easier to categorize object and also easier to find object you need (by collapsing folders that contain objects you DON’T need, like when making Breakout clone collapsing Bricks and Bonuses category when you want to find paddle/ball.

I’d like too.
Can be extremely useful.I think the best way to go if we have a Categories tab next to Objects tab.
We can import objects in to objects tab as it is now,
In categories tab,we can create categories like:
-player objects
-AI objects
-scene 1 objects
-scene 2
-weapons
-enemies
…etc
Whatever,and we can simply assign objects to categories,under object settings,even to multiple categories if necessary,like:
-object 1 assigned to: category 1,category 2
-object 2 assigned to: category 1
So in objects tab we can import and find all the objects as it is now,in the Categories tab,we can create categories and find the objects under the assigned category.

Somehow similar to Categories works in Wordpress which is a blog (content management) systems but I think a good example.We have to create content only once and store it in one place,in this case in Objects edtor as it is now,but we can assign the content (objects) to categories so we can find them under multiple categories.

I would also find this very useful!