[vbat99]

Thanks for the new release!

1. The filter settings for actors and directors now can stick in alphabetical order. But those filters still only show actors starting with A and directors starting A thru J.

Movie Preferences -> General Tab, Actors filter can be set to Minimum and Maximum number of actors to display.
Same for Directors.
The Maximum number of Actors, Directors and Sets is each 5000. The default is 500.
Why. Increasing beyond 5000 is a major performance hit as MC cross references all actors to all movies.
For example, 2400 movies, and over 88000 actors, I set the limit to 100000 actors. MC took 80 seconds to process the actors for this filter alone, and another 48 seconds to process the directors. (Some actors are Directors also).
At 500 (default), MC was half a second. at 5000 limit, MC took 6 seconds.

4. Thanks for adding more sort options to the movie navigation panel! Currently clicking on header only has the same effect as clicking on "Inverse Order" wherever you click. How about sorting the list by "Title & Year" if the user click on that header cell when the list is sorted by another column like rating or year?

Well, from looking at this, you have choose to sort the movies by a particular method, say by resolution, then you want to sort by Title & Year. Which is it. Sort by Resolution or Title.
Clicking on any column header is designed to invert the list.

This is staying as it is.

There is no ideal way around this to list all actors without a massive performance issue.