Doubt anyone would play that, due to the fact you don't loose your classic status when you did and a lot quit this mode or didn't bother to play.
Let's say it did come out it would have to have atleast slower rates then what regular hcim has, so people going to grind even more then they would on classic just to loose their hcim or 'abusurd' status to mistakes.
Classic is still pretty new so i don't think we need any new game modes atm, but that's my opinion.