I’d like to see an MKV with some version of the ANH crawl. I’d have been all over the seamless branching if the DTS-HD hadn’t been the trade off.
The other option is to do a BD50 including the full encodes of both crawl versions, which can then have DTS-HD audio (or to find some way to ‘fix’ the current DTS-HD - they fight with almost every program I throw them at). It would be terribly inefficient, but technically the best presentation. I don’t think it would be worth it, because you would still be limited to 8 audio tracks. I think the best way to go is separate MKVs which can be made into blu-ray via tsmuxer as usual. Very few people are interested in the ANH crawl in general, especially the 1997+ version.