If there are 3 English subtitles, then all 3 subtitles will be set to 1, 2 and 3.
But I would like to change the 3rd English subtitle to be on the first position for example (similar to the arrows in TSMuxer where you can move up the selected audio stream or subtitle).
it's looking sweet, more testing needed. hopefully tommorrow or friday at the latest you can give it a whirl...