While experimenting with WinDVD to find a way to reset its BD region counter, I come up with another idea:
WinDVD BD for VAIO does not allow you to select files on hard drive to play. It only allows playback from CD/DVD/BD etc. drives, including virtual drives created by VirtualCloneDrive.
So I thought it would be good if VirtualCloneDrive is able to create virtual images on the fly from folder(s) on the hard drive. You should be able to specify the file system as well (ISO, Joliet, particular version of UDF or their combination). It should recognize VIDEO_TS folders and place files in that virtual image according to .IFO files. It should do the same for HD-DVD/Blu-ray folders (if it makes sense for them, I don't know).
From user interface point of view, it could be an option in right-click menu, in addition to "Mount..." and "Unmount". It could be "Mount from files..." or something like that. It opens a window similar to those common for burning programs like Nero or Roxio. User adds files/folders there, selects desired file system and clicks "OK". Virtual image is then created "on the fly".
Is something like this possible at all?