I have been seeing these huge 17 hand horses forced to 4-beat and its not natural. In my opinion showing and horsemanship needs to be on the natural movements of the horse. 4-beating and what we cal peanut rolling(heads almost on the ground) is not natural its very uncomfortable and it looks stupid.
They honestly look like robots. They can't pick their feet up, they can't make quick gait changes like that so why are they doig it?
Horses should have free movement of their heads. Having their heads tucked into their chests is harsh on their necks and they cannot move out like they should. They use their whole bodies for balance and fluidity. If you have them loping in a four beat or headsa tucked to far they have horrible movement and balance.
So I say if they want to stick their face out some then let them.