Granted, most of the music here is all original anyway so nothing of value is really lost replacing it
Ironically this movie is a rare instance where a genuine artistic argument
could be made for replacing the music... Well... Part of it at least. Two tracks, specifically. Track 1 "Our Story", and track 50, "Lugia Summons the Wind". (Translations may differ depending on where you read them but this is how I would translate them.) In a way, it could be argued that putting in the English Lugia theme would have actually preserved the experience the Japanese had
better than straight-up keeping the original would, seeing how the overwhelming majority of international fans have never heard the Japanese Lugia theme whereas the English one is iconic.
...But that's neither here nor there, I've long since made up my mind that if, indeed, the original score is kept intact, (and I can tolerate them changing the ED song; I'd prefer it if they didn't, but as long as everything else is kept I can live with it) and
don't add music to scenes that didn't have any originally, TPCi can take my money. Even though I'm unlikely to ever watch this movie dubbed, I will buy the US DVD just to give TPCi the thumbs up for, quite frankly, not overstepping the bounds of what a dub should do. (Which is to say, translate a product from one language into another
while preserving the experience its native audience would have had as closely as possible.) At this point everything points to TPCi indeed getting my money for this, but I'm just waiting for the dub to actually be
shown so that I can get a definitive statement from someone who's actually seen it.
EDIT: ...Although I guess in one way the dub Lugia theme will still kinda-sorta be in there. Zeraora's theme sort of invokes it (probably on accident), as the last four notes are literally the first four notes of the dub Lugia theme in a lower key.