I think BDSM and power exchange is 90% mental and takes place in the mind whereas the remaining 10% is physical. Because of that, I think it's essential that both the dominant and the submissive are both passionate - neither pretending. If one or both are not genuinely dominant or submissive, then it's just lacking the basic elements to make it rewarding.
Some keywords from others I enjoy: control, chastity, tease, denial, intelligence, hypnosis.
Some keywords from myself I hope a sexy, confident dominant woman will enjoy: subservience, obedient, polite, well-mannered, pleasing, and intelligent.
Some things I don't like are anything involving money. It's against the Terms of Service of the site. I don't like anyone excessively too pushy too early. Trust is essential and trust takes time to build. And, as I mentioned before, I dislike people not real, passionate, or genuine. Pretty reasonable parameters I think, but you'd be surprised ...