First I'm not sure how easily those mechanics would be implemented though they would cetainly add too the DnD feel their absences doesn't take away from it imo.
P.S.: I'm sry that it upsets you that I believe this change is a step away from DnD feel but I have every right to feel that way as much as you have the right to be upset by my opinion. My reasons are as follows:
First: I do agree that there are other aspects of the game that water down the dnd feel. So we agree on that point.
I believe that this change will draw away from the base mechanics of 3.5 DnD because:
This is not a variation of a rule. It is a completely different rule thrown into effect that had no place in any DnD rules/variations. you could argue that this balances the game and even it were true it would not take away from the fact that it is so Abstractly not related too 3.5 Mechanics. I personally don't see how it will balance anything. It will most likely just quell one monster while feeding another.