This is an idea I've had for a while, as I've felt like some Creative items should interact with each other in unique ways in order to make more interesting combat scenarios and map ideas. Essentially, this concept would make certain weapons or consumables do unique effects to each other when they are used together, are put in combat against one another, etc. The following list is a handful of ideas I had that should hopefully give you an idea of what I'm asking for:
-The Shield Breaker EMP can disable the Guardian Shield for a short while if it collides with it.
-Weapons that deal Fire Damage such as the Dragon's Breath Shotgun or Fire Trap remove the Ice Feet effect from anyone hit.
-The Cloak Gauntlets prevent the user from being spotted from Traps like the Damage Trap, Poison Dart Trap, or Fire Trap.
-Items such as the Flashlight Pistol can let you see through Smoke Grenade clouds or players using the Shadow Bomb.
Obviously, if these were implemented, there would need to be some sort of way to disable these features for maps that would break with them such as an Island Setting, but I believe that additions like these would allow mapmakers to make more interesting combat experiences.