This is...an interesting approach. Reddit is far from a Microsoft loving community; it will be interesting to see
1. If Microsoft can get some good feedback (they should be able to)
2. If they'll use the feedback (remains to be seen)
3. If the use of the feedback leads to a better product (really remains to be seen).
Still, it's encouraging to see a huge company like MS engage a hivemind like Reddit for this type of thing.