I would definitely want musing to have lots of new features. I personally am a big fan of statistics. If musing can come up with good stats to display how many questions people have asked and how many answers people have made along with total earnings from musing etc can really be a good addition to the platform.

People easily get attracted to the stats. The top musers will also be a good addition. People will then be able to compete with other musers in asking and posting answers.

I personally feel there are lots of development opportunities for musing to become a good competitor for Quora. The UI can also be made a little more fancier than it is now.