Requirements Management on TFS 2010 should be improved out of the box
Reliance on third party products is Ok if you want to feed an ecosystem of partners, However for customers, the TFS requirement management should include something to use straight out of the box instead oo relying on word or excel interfaces.
Its just an opinion and it was reinforced by attending a session at Tech Ed which seem more like a marketing session for third party tools.....
Tech Ed Rocks