1) An object editor --> You draw an object with the ability to convert it to the level editor.
2) Triggers:
-'Call trigger A when person B kills a character/player'
--> calls a trigger when the player kill somebody
-'Clone movable A to its current location'
-'Clone movable A in region B'
--> Spawns exactly the same movable at its current position or a region.
-'Let character A say text B'
--> A text comes above the character and in the gamechat.
-'Clone gun A at region B'
-'Destroy gun A'
--> Clone/ delete a gun in a map.
3) Fire would be nice (but maybe it would be laggy)
4) Melee weapons like chainsaws and axes,...
5) The ability to change the looking of movables... like wooden/iron/... doors