RDP published app via RDS as RemoteApp windows shortcuts (ALT+TAB)

This is not a question but rather feature request. I'm not sure how up to this point no users complained about lack of functionality.

Currently if remote terminal server client is published using RDS it will not accept windows key shortcuts (Alt+Tab, Win+R etc). This is a major lack of functionality especially for people who are using remote connection as a primary means to do their work. Similar solution developed by Citrix called Citrix Workspace doesn't have this issue.

I'm sure it would be greatly appreciated by windows users who use remote connections and have mastered keyboard shortcuts for this feature to be added.