I noticed only four of the movies have subtitles. Is that intentional?
Yes, the subtitles are only for alien dialogue, and I used the burned-in subtitles after Episode IV.
The only reason I didn’t use the burned-in subtitles for Episode IV was I wanted to make the subtitles for the Greedo and Jabba scene in the same font, so I masked the subtitled part of Harmy’s with the blu-ray and color corrected to match.
I would have only used them for the prequels, as there is so much non-English dialogue (Anti-Cheese Edits, Telugu Watto), but I needed the Jabba scene to match.