This is a fabulous tool. One "feature request" I would love to see is a favorites list. The recent list is great, but since it tracks every folder visited, it can fill up fast with the intermediate folders needed to navigate to your new destination. Given that I frequently need to shift between widely separated directories on network shares and local drives, having a favorites that I could just use to hop to at least the approximate location would be great!
In R2013a, a curious glitch has emerged in the behavior of the documentation. When I type 'doc', go to the home page, and click on 'Supplemental Software', I get the documentation for this package (and some others). However, the display flickers. MATLAB Support uncovered the source of the problem: the line
<meta http-equiv="REFRESH" content="0;url=xunit_product_page.html">
in the file index.html.
The fix was to delete index.html and replace it with a copy of xunit_product_page.html, renamed to index.html.