Danger Mario is the opposite of balance...
There is a Danger Badge that makes you start battle with 33% of your HP (which is danger in our game) and of course all the badges like Last Stand and Pretty Lucky are in the game. HOWEVER, there won't be anyway to abuse the Badge Point system by raising the Max (you have to find BP like in Seven Sages), and you also have to manage badges for 2 other members of your party, so I don't think Danger Mario will be as feasible.
But, we'll get there when we get there. Something like DM may arise simply through lack of foresight on our part, but we plan on releasing content and balance patches throughout it's life.