Do you want a PowerShell based build environment?
If so SPEAK UP NOW. The Windows SDK team is looking for feedback on whether this would be useful. Check out their request for feedback at: Influence the future of Windows sdk – Powershell based build environment
Jeffrey Snover [MSFT]
Windows Management Partner Architect
Visit the Windows PowerShell Team blog at: http://blogs.msdn.com/PowerShell
Visit the Windows PowerShell ScriptCenter at: http://www.microsoft.com/technet/scriptcenter/hubs/msh.mspx