In relationships in general, I believe the man should be the head of the house, not only in name but in deed. This means I expect him to be the breadwinner, make important decisions, maintain the home and raise the children. I believe I am equally important in the scheme of things but not necessarily equal. I expect honesty, affection, respect and monogamy in return for the same. In BDSM, it is no different. The ideals I want in a man are the same ideals I want in a Master, for they are one and the same person.
Preferences are another compatibility issue. Obviously, if someone is into polyamory, we wouldn't be a good match. I don't expect all interests to match perfectly. It leaves room for compromise and experimentation. The importance, for me, is experience. I don't want to be with someone who is "exploring" the lifestyle. I want to be with somone who knows who he is and what he likes as well as what he's doing when he does it to me.
Daddy is close enough to perfect for me. We're different enough to keep things...interesting....but alike enough to be able to envision a future together.