Aaron has had his WSE Wish List up for about a month. A couple customers have asked some interesting features, so I thought I would throw in a pointer for everyone to see where they can ask for features. Just post on your blog, and the trackback will show on Aaron's blog.
Remember that you can always post feature requests to the MSDN Product Feedback Center, which is monitored by the product teams. A quick search shows that there are only 3 submissions for WSE, so get busy submitting your ideas on the Product Feedback Center.
Here are a couple of ideas that I have heard in conversations with customers.
Here are the things I have not heard customers asking for.