I don't believe you. I believe you say so only to deny yourself the truth. These feats make some (but not all) players decide against playing fighters with spears, throwing knives or whatnot, because they offer such a huge increase in primary efficiency. Other players couldn't care less, but also would not be disturbed by feats that were actually balanced and included more variety.
But I do not suppose we can get any further, so I guess our discussion is at an end. The OP has been given ample answer as to what exactly makes these feats so good.
All we can do now is await the revised edition and hope these feats are included in it.