Downloading Resource.xml from the link in the Wiki worked fine for me. Note that, depending on your browser, you likely have to right-click on the URL and choose save target as. Otherwise the browser will try (and fail, not knowing what to make of MJRS formatting) to display the XML, so it just shows up blank.
For the rest, you might want to explain a bit better what you actually want to know or would like to have added, because I'm not clear on some of it (like your MCC_List_Send question).
I will say, generally, that the MCC commands that let you activate different "Views" in Theater View have been, in the past for me, unreliable if you aren't using the default Theater View setup and Library. I can't say for sure that is still true, as it has been years and years since I've tried, but... That might be an exercise in frustration for you, and you'd be better off not trying to automate opening and closing Views in Theater View, and instead consider simplifying it so the users can just use Up/Down/Left/Right/OK as designed.