Perfection is a fleeting illusion. Peggy, as you and others have astutely pointed out, traits that seem appealing in the spontaneity of the moment - may prove to be unacceptable in the long term. Conversely, traits that seem unacceptable in the moment may become appealing the more we're exposed to them.

Under enough magnification, nothing is free from flaw. To me, flaw means an impurity, a contaminant... typically undesirable to all. Though we may consider a trait to be incompatible with our standards, worldview etc, that doesn’t necessarily qualify it as a flaw in my view.

For example: Many would perceive someone with a mental handicap to be flawed, and perhaps have a tendency to avoid that someone because of that perception. Thinking of that someone as disabled might evoke pity. Thinking of that someone as differently-abled might evoke appreciation for their unique qualities.

It may seem like I'm arguing semantics here, but the way we perceive and use words carries a lot of weight.

Now... this flawed individual will get back on point.

If a prospective partner or I consider any of each others traits to be intolerable, I can't imagine it being good for either of us to start or continue a romantic relationship with each other.

I don't want someone to change to satisfy me, and I don't want someone to expect me to change to satisfy them. What I do want is for us all to be open to others example inspiring us to change for ourselves, not them.