Sadly, if this is the case, I will most likely not buy the game. It makes sense from your guys' point of view. I don't personally use the knife hardly ever, and I rarely ever die from it, but it would be a complete waste of a perk, in my opinion.
And, it kind of changes what CoD has been. Tactical Knife = useless in this case, as well. Stabbing someone fast doesn't do a whole lot of good, if you have to do it twice.