Its really pointless. All of Minecraft's tools are good as of now. A coal pick would be unnecessary because of torches. Even if it did break coal instantly, why not have a dirt shovel that gets dirt instantly? or a sandstone pick that gets sandstone instantly? Because its pointless.
I think that's a typo. Did you mean "How about coal tools?"
It's a terrible idea, about as stupid as dirt tools.
was a typo
thanks
-Edgar Allan Poe