Sorry Raul, while I tend to side with you in this particular discussion, your "...enjoy the MUSIC NOT DISTORTIONS" is a valid pursuit, but not a reasonable ultimate reality.
I think the best compromise to the "2nd pivot" is @robes initial question regarding the Townshend trough. If available, it would not only address the "swaying" without adding a "2nd pivot" thereby changing the whole arm’s reason for being, but positively affect the cartridge resonances. A more perfect option.
@stringreen’s statement earlier that the cartridge’ suspension should take care of the 3D arm sway is I think, asking too much of the cartridge.