This is interesting. I was just showing Unity to our artist so that he could make some changes to the scene. The first thing he wanted was a way to disable selection of some objects (like in Illustrator or Photoshop) so that he wouldn't select them by mistake. My answer was to lock the layers, but we use the layers for gameplay mechanics and this could break them. Also, putting objects you don't need right now on a different layer and lock them is very cumbersome.



In my opinion a lock functionality would be more useful than fully hide those objects, because we're usually trying to move/edit some objects with respect to other objects in the scene, Especially in 2D games where you have a lot of layers on top of each other and want to move some objects and match them to background.

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