The Perfect Baby? QW #2

If I were to design a perfect baby, I would make it athletic and smart. I don't really care about the aesthetic part of it so I would definitely just make it have a very good personality. If it were possible to genetically design a baby I would also want to make sure that they would not pass any genetics on that would cause cancer or any incurable disease. I am against this yet obviously if it were my child I would be a bit biased.