All, or at least almost all the JP BDs have all the dubs included anyway. The Castle in the Sky one is also the only one that has proper subtitles and both the Eng Dub AND the dub soundtrack. (US had dubtitles and the dub + original OST, JP has real subs plus 2 versions of the eng sound)
Yeah Laputa was a weird one with the audio. This is the comparison between the Japanese, US and UK/AU Blu-ray releases:
JP:
Japanese DTS-HD MA 2.0 @ 1732 kbps
English DD 2.0 @ 640 kbps (2003 full-orchestra re-score but with the additional dialogue + newer sound effects removed)
UK/AU:
Japanese LPCM 2.0 @ 1536 kbps
English LPCM 5.1 @ 4608 kbps (2003 re-score but with the additional dialogue + newer sound effects removed)
US:
Japanese DTS-HD MA 2.0 @ 2098 kbps
English DTS-HD MA 5.1-ES @ 3685 kbps (2010 version - original score, no script changes)