I wish my mother had taken a bit more interest in me as a person, rather than the person she thought I should be. If what I wanted to do didn't very obviously match up with what she wanted, I was on my own.
She was also curiously strict and overly protective in some ways, but totally lax in others, which made for quite a confusing home life with constantly changing boundaries.
My father was a lovely, but passive, man, who, as a commercial mariner, was away most of the time. I would have liked him to be a bit more involved in my life.
I received an ASD diagnosis as an adult which has helped me to explain a lot of what has happened in my life to me. I realise it can't have been easy for my mother, bringing up what appeared to be a rather odd child (no autism for girls in the late 80s/early 90s!), but I wish she had swallowed her pride a little and asked for help. With hindsight and 'ASPDAR', however, I'm fairly sure she is on the spectrum herself (although she would never countenance discussing it or seeking a diagnosis).
I feel as though I've made my own decisions since I was about 13, which is fine in a way, but as I get older, I would have liked a bit more 'person-specific' guidance from my parents.