I think a Despecialized Edition without subtitles for the alien speech would go against the purpose of the Despecialized Edition’s mission.
Indeed. I completely understand the desire to have it look right in one’s native language. But a good amount of work went into the making and rendering of the text by (at least) Harmy, Catbus, and me. And it can’t be pulled off as effectively with a subtitle stream alone.
Maybe Catbus can answer: Are there packs of subtitles available for just the Greedo text (presumably rendered in the top portion of the screen) that people could mux in with their dub of choice?