This kit allows players to track others and when holding or activating a certain device, it allows them to see through walls to where to other players are. This could also work with chests although working on players seems to be enough of an advantage.
I believe that this kit would be a really good addition to the game and allow players to have a more interesting variety of gameplay.
I believe he would make it client based block changes to everything to barriers.
SkittleMC has that /danceparty or similar command, that skeppy has shown off and thought he ruined a house, even though it was all just client based and did nothing to the actual house.