As the title reads . It would make all difficulty settings more challenging rather than just critical mode.It would also give the game a little more replay value, I'd probably go back and play on beginner with Exp Zero to see what it's like. 

 

 

What'd you guys think? I doubt this will happen but it'd be a nice touch

That's definitely not a bad idea.

I always thought this would've been an awesome idea, I don't know why it was never included.