Comment 2 for bug 190092

Yes, you're right that some of these are difficult to implement since they depend on hardware of the NTFS file system. Fair enough.

Explorer.exe would be really nice to get working though, since its what is used a lot in Windows.

Yes, there is a registry editor in Wine, but the default registry editor in Windows should work too, because it should be about compatibility.
Its good if the default registry editor works, because then Wine is more compatible with Windows applications.
Wine must be compatible!