The ability to copy files/folders to the WinSxS directory (as example) would be nice it's extra protected by TrustedInstaller as you know (implementing this would help) moreover, applying a wim file to the mounted image because wim preserve NT Security ACLs, and eliminates the need for extra privileges to add files to the protected directories using the current feature leads to error in mounting registry, i. e. [RUNCMD]dism.exe|/Apply-Image /ImageFile:VCredist.wim /Index:1 /ApplyDir:%WIM%this new feature if possible will help making correct complete addon for the vcredist 2005/2008 (which adds files to winsxs) it also will make it possible to create offline addon for Windows7's KB2533552