[hubblec4]

To have a 1:1 copy of a BD or DVD menu is in my opinion not necessary. If someone need this you should use BD or DVD in original.

My hope was that i can play all episodes of a series with one double-click by opening a "root"-file and then change audio and subs easy in the player.
(a playlist is not what i want)
With my Matroska Menu I almost achieve this.
In MPC-BE you have two buttons to change the audio and subs with one click.
One button is missing: change mkv editions.
Ok, you can all do this with the MPC popup menu(right click in the screen) -> select filters -> LAV Splitter
or you use the tray icon of LAV Splitter.

But my favorite player is MPC-HC and there are no such buttons.

The good old Haali Splitter has the TRACKSETEX function, with it is very easy to change audio and subs with one click.

The Matroska Specs for menu feature are not finished and we could add more stuff, I think.
When the ChapterProcessCodecID is set to 0 (default) the native Matroska processing system is used and there are only one command at the moment.
We need more commands there.
A secret for me is the Control Track, which is needed for the communication between the xml-features and the user inputs.