Yeah but no time soon. Got another Alien project id rather work on first. Odd that error wasn’t in 1.5 when people tested it.

To answer your other questions. 4.1 has some compatability issues on older receivers and some software even though it’s in the Dolby spec.

That’s why older ac3 track on lds and DVDs that weren’t pure 5.1(or 2.0) were still wrapped in 5.1 container with dupped or dead silence channels.

Also since in theaters a 70mm mono surround track would come from multiple speakers it should be fine to do as long as there is no cancellation

As for the chapters that’s a pure copy over from the BD and it just defaults the names like that. I can change it in the future