Discussion: push pull design and minimal distortion does it matter ?

Taking aside the 2nd harmonic cancellation of the sub box/driver design what if you power said sub design that has a amplifier power source that is maybe designed deliberately to re-inforce said 2nd order harmonics? Does this give you the perfect sub?
I wonder if a typical plate amp could use a dirtied up tube input stage to flood the amp with 2nd harmonic distortion for this.
I'm in the middle of completing some folded open baffle bass bins/speaker stands.
Maybe while waiting for the last parts' delivery, I'll dig out a tube buffer and insert it to line level feed the plate amp.