Thank you for your answer.

Actually, the English subtitles were burned only on English theatrical versions. On international theatrical versions, there was no English subtitle. So the lack of burned subtitles on VHS/LD is not an alteration IMHO, it is conform to the international theatrical version.

The P&S version is obvisouly inaccurate, I won’t discuss about it. But I’m not aware of different audio cues on WS. AFAIK, both VCD and VHS present the theatrical stereo track (and, for LD, the original 6.1 track is also there).
Could you tell me more about those different audio cues?

Anyway, I’m not sure that the Z bootleg was ever used as an audio reference…