As we know, big-list type questions are not very suitable for the Stack Exchange Q&A format. The answers to such questions to some degree depend subjective opinions and often, there is no definitive answer. However, some sites like Physics SE have figured out policies to deal with such questions. Of course, certain big-list type questions like What are the methods of quantum computation? with a great set of answers can be very useful to the community as a whole, while some others like this one: not so much.
When I came across the question: How to make qubits more stable towards noise?, yesterday, I was pretty much in a dilemma whether to vote to close or not. Finally I decided to do so after some pondering, because the question isn't specific at all! Mithrandir's comment sums it up well.