If it leads to less ridiculous ejections, then I'm all for it. It's pretty unfortunate when an offensive player leans in or lowers their body and helps create inadvertent targeting, yet the defender still gets ejected.
It's the defender's fault all the time because he suffers from a condition where is head is on top of his shoulders.
To my way of thinking, targeting should not be considered any helmet to helmet contact--which is the way almost all officials now call the foul.
What I mean is, a running back or receiver is running with the ball, and as you point out they dip their hips to get lower in preparation for contact. The defender also has to drop his hips to wrap up and make a tackle--and sometimes, helmets hit. That's just football. But too many defenders get called for targeting.
Now if a defender clearly leads with crown or top of his helmet, and/or launches into the air, and then leads with the crown, then yeah, THAT's targeting.
But this bull stuff where defenders are being ejected for incidental helmet to helmet contact has got to stop.