Command prompt really needs this! A way for you to use enemy, item, npc, bloc, etc. Id's to use this. So that if a character does something (like collecting an item) you can tell command prompt to do something.
Here's a full example. If you made an item, then made another with several effects, you could use the command prompt to tell it the first items id and tell it to only let the other item use all of it's features if you have collected the other item. Simply put, in Mario 2D games the mushroom is required to use the fire flower. This would be one of the main things in my game. I'll need this to complete my game.