I've been thinking of an idea for the level editor, I called it: "Group System".
So basically, it simply groups certain parts/materials of the level into one specific group which can only be influenced if a certain group is activated. Otherwise, i wouldn't be able to be selected.
In my opinion, this would be very useful when creating a map with lots of moving movables which sometimes overwhelms the editor due to overlapping materials e.g: when trying to make boss fight map made out of movables/making saw map with lots of obstacles; making absurdly complex map.
I've also made an illustration, please go ahead and visit the link below!
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I guess that's all i can say, thanks in advance!