For me, they don't have to be de-converted to be ideal.
All I want in a person is for them to be kind and ethical to others. If they want to believe in a higher power, that's fine. As long as they keep it to themselves and don't try to change other people, it doesn't bother me one bit. Many agnostics/atheists believe it's so sad that people go through life clinging to deities, but I don't mind that so much. People find their own happiness, just as I have. My ideal Christian (or any theist) is someone who is a good person, is open to thoughtful discussion, and doesn't judge or try to change others.
Basically, don't be a dick.
All I want in a person is for them to be kind and ethical to others. If they want to believe in a higher power, that's fine. As long as they keep it to themselves and don't try to change other people, it doesn't bother me one bit. Many agnostics/atheists believe it's so sad that people go through life clinging to deities, but I don't mind that so much. People find their own happiness, just as I have. My ideal Christian (or any theist) is someone who is a good person, is open to thoughtful discussion, and doesn't judge or try to change others.
Basically, don't be a dick.