Separate "Effects" tab from where you could select and place various effects from the game: Smoke, fire, lights and etc, with the ability to edit it (if its light for example, its colour, brightness and if its should blink)
Would add up more options for the players who like to make scenes or just good looking background
#Mission editor - Effects
olive cobalt
native cloud
Also, have a destructible/indestructible toggle for them so you can control whether it should stay or disappear after getting hit.