They'd still have to be ratified by the states; I don't think there's going to be fewer than thirteen states that would be against bad/hijacked amendment proposals.
Keep in mind that those who ignore the supreme law of the land now are no more likely to pay attention to one more Amendment (or a dozen) than a mass murderer will be swayed from their crimes by another gun law.
Well, that's why some of them have mandatory loss of position and retirement benefits for their violation — if that's not enough, then only shooting remains as a tool for reform.
I hated my history teacher, but I learned all this stuff in Junior High school. I wish she was alive today, I would love to thank her.