Razorback I was suprised by your comment of there being NO Software which supports MKV-3D.
Firstly, I think we need to clarify that you are talking about MVC 3D format MKV files.
I see your follow-up noting MPC (Media Player Classic) as one MVC software solution.
Also, I just did a quick google for "MVC MKV playback" and discovered a link indicating that the Kodi open source project also now supports MVC 3D playback. This link may assist the developers: https://forum.kodi.tv/showthread.php?tid=221407
Also, you say the preferred approach would be support for ISO / BD file structure.
I would like to disagree with this as being the preferred approach, for the following reasons:
The most pressing requirement is the ability to decode and display a MVC encoded video file. Currently the most straightforward, clearly understood, and popular "open" container for MVC 3D video is MKV.
By requesting support for BD file structure / ISO files (effectively full Blu-ray content decoding), this adds significantly more complex development effort, which will likely only delay delivery of the core MVC video decoding need.
Many of us (most?) prefer to rip all desired ISO content to individual MKV files (eg. main feature only, and perhaps any special features of interest), for both simplicity of playback, and also for optomising storage space.
nb. Plex does a great job of indexing / cataloging these MKV files and also provides the DLNA server functionality for SkyBoxVR playing back MKV container videos from from your centralised network media library.
@Jenny Thank you for your recent update on this topic. Perhaps the added Kodi information link will assist? We look forward to more.