Ho, ho...
Sigh... I think I have to admit very frankly that I completely missed to make whatever improvement to the BatchMux frontend...
I an not in the position to ensure anything... Please consider that the topic is much more complex than it may appear at a first glance...
However, from an old PM discussion, I remind that the pending relevant improvements, from the authoring support side, are:
1. To save the BatchMux echo into a log file instead of using the stdout
2. To add audio/subs submenus for the language selection
3. To add chapters submenus, in order to select the chapters
Is the above list still complete?
Cheers,
SD