My ideal partner is an individual, someone who is not afraid to be his or her self no matter what other people think or say. My ideal partner is a free spirit who will not hide their unique perspective, but defined it, and defend the unique perspective in others. He or she will form their own world view and not be afraid if it does not match the standard.
My ideal partner would be a teacher and an enlightener, or at least try to be. They will be controversial, because in order to make a difference, one has to me.
He or she would also be able to do this with warmth, compassion, and humor. He or she will feel their emotions fully and not stifle or be ashamed of them. A temper, immaturity, or unpredictability is allowed.
They should be passionate and wise, and able to use that to better others.
Note: You asked for an ideal. I know that no one is. *GG*