Good show! I'm a big WinJS fan, collaborated a little with the codeShow app and recently forked the WinJS project.
I believe the team is looking too much for cross-platform (talking about browsers here) and not paying the attention needed to the Windows Phone version. There's still no Date or Time pickers, Flayout, etc. I believe in order for us to create real 'Universal' apps the control set should be complete.
Keep up the great work!