Windows Server has a new UserVoice page: http://windowsserver.uservoice.com/forums/295047-general-feedback with subsections:

• Clustering: http://windowsserver.uservoice.com/forums/295074-clustering
• Storage: http://windowsserver.uservoice.com/forums/295056-storage
• Virtualization: http://windowsserver.uservoice.com/forums/295050-virtualization
• Networking: http://windowsserver.uservoice.com/forums/295059-networking
• Nano Server: http://windowsserver.uservoice.com/forums/295068-nano-server
• Linux Support: http://windowsserver.uservoice.com/forums/295062-linux-support

   

This is where YOU get to provide Microsoft with your feedback directly.