THe most important thing for me is someone who has good middos. Obviously no one wants a mean husband but middos are so important to me. And girls (not all but many) notice the little things on the date. Saying thank you to someone who held the door open for example shows someone’s middos.
Also another thing is being genuine and real. Having a rav/rebbe he is close to. Knowing where he is going in life. Every girl will have their own list and things of importance.