I'm always baffled by why the heel turn is such an issue in the dance community, but goes completely unnoticed and couldn't be more natural when danced with a partner who knows how to lead it. The part that baffles me is why the ladies are talking about it and not asking the men, "why the heck doesn't it happen automatically?"
If the man times his steps and body movement in all three dimensions right, the lady doesn't even need to realize that a heel turn just happened. If the man isn't doing his jobs, then the lady has to save him. Timing, direction, power, and steps: not the lady's responsibility. She's got more important non-intersecting jobs to work on. The concept that this heel turn, just like the close of feet in a Rumba fan is somehow the lady's responsibility to "get" is, in my opinion, one of the greatest triumphs of the men in ballroom.