There aren't any real generic personality traits that will work for everyone. However, someone who takes the latter too seriously will make their dancing very mechanical and stiff. I really don't want to see the exact same fan over and over again 10 million times. Lastly, control and power are the finishing touches in dancing. The ideal dancer should be able to control their movements enough so that they can do one rumba walk in 1 beat or 4 measures.
Control also means knowing when to relax and yet still provide a connection.
Although these are only a few qualities in finding the right partner, I've been searching for someone with them for years. So, sometimes you just have to say bypass some of them to be able to dance.