I think jutsu combination system (J.C.S) should be a thing... let's say.. i have fire element and someone has wind element we stand next to each other and then we turn on/click something... idk ... we use the 2 jutsus that can be mixed.. and then (fire+ wind) bigger fire.     fire+wind= big fire   wind+earth= dust (like a dust covered area (like the mist hing))
fire+earth= lava   fire+water= steam   water+lightning= electrified water (stun)   water+earth= mud     we can even do 3 ppl at a time example   fire+fire+wind= huuuge fire o-o   this way teams would be a really good thing to have.. if u ever get in a fight ... ur set   etc.. etc..