Reading the above, discussion. My vote would be to adopt a similar approach as taken in the v2.1 release:
Harmy said:
v2.1
Technical Specifications:
________________________
FORMAT: AVCHD DISC (ISO)
SIZE: 7.9GB (DVD9)
VIDEO: 1280x720p H264 23.976 fps
AUDIO: (all Dolby Digital) Special thanks to hairy_hen and Belbucus
TRACK 1) 5.1 1977 70mm six track mix @ 640Kbps
TRACK 2) 2.0 1977 stereo mix @ 256Kbps
TRACK 3) 1.0 1977 mono mix @ 128Kbps
TRACK 4) 2.0 Isolated score @ 192Kbps (music only)
TRACK 5) 2.0 1993 LD Audio Commentary @ 192Kbps (silence filled with 1993 LD 2.0)
TRACK 6) 2.0 2004 DVD Audio Commentary @ 192Kbps
TRACK 7) 2.0 2004 starwars.com Audio Commentary @ 192Kbps
TRACK 8) 2.0 2011 BD Archival Interviews Audio Commentary @ 192Kbps
Subtitles: (Project Threepio) Special thanks to CatBus
English (en)
Chinese (Simplified) (zh-cn)
Spanish (es)
French (fr)
German (de)
----------------------------------------------------------------------------------------------------------------
IF we drop ALL foreign language audio tracks (while, of course, retaining all the latest/greatest foreign subs from Project Threepio), BUT make v2.5 compatible foreign language audio tracks (supposedly those included in v2.0 would do the trick unless there has been any runtime adjustment to the v2.5 video) available along side the BD25 English audio only v2.5 release (as either an audio only à la carte option OR as part of a trimmed down English, multilingual audio alternate version)…
…update the v2.1 English audio tracks to include *BOTH* DTS-HD MA and TrueHD versions of hairy_hen's much anticipated NEW audio set in v2.5 IF that's not going to be a considerable PITA for either hairy_hen (in encoding the tracks) or Harmy (in mastering the Blu-ray), AND perhaps that may even make sufficient room for Star Wars DE v2.5 video at a same or higher bit-rate (compared to v2.0) while still maintaining a BD25 size?
Unfortunately, like most here I'm going to be pretty limited in the DOING it end of thigns…but from a "what's going to make for the BEST quality, most compatible final release", conceptually I thought that this idea might fit the bill?
The thing that I and most here should be able to do is help keep this final v2.5 product alive and well on MySpleen (and perhaps other locations) for several months and years to come…and keeping the BD25 size without compromising on quality and compatibility (and hopefully with even a couple/few bonus features sprinkled in) would make that task significantly more feasible and sustainable!
THANK YOU Harmy, hairy_hen, dark_jedi, You_Too, CatBus, and ALL OTHERS that have contributed to this amazing preservation project! :D