Alright, at least from this trailer it seems like the EN and JP acting are within throwing distance of each other. I won't lie, I think the JP acting has better emotional conveyance (keeping in mind that I don't speak Japanese), but the EN acting is acceptable. It's not amazing, but it doesn't bother me either. The good news is that with no region lock, there's no reason not to include dual audio since there's no hard versions anymore. And of course, if it turns out that the EN VAs are all actually absolute shit and there is no dual audio I'll just order a copy from Japanese Amazon.
Old woman, presumably Impa: Both women, both old, I'm good with it.
Gruff Male, maybe Deku Tree: Nothing objectionable, though if it is Deku Tree that EN voice is not at all how I've always imagined it.
Zelda: Ooh boy. JP is good, no complaints. I think the EN actress is a bit too subdued for what seems to be a disastrous failure event.
Random Goron: 10/10, Game Of The Century
I also have an additional prediction to log. They have been very, very particular about always referring to Ganon as "Calamity Ganon". I think that, given the line in the trailer, he/it is the giant shadow creature surrounding Hyrule Castle. This leads me to believe that, in conjunction with the idea that Link was missing for a cycle, Ganon managed to obtain the Triforce. My prediction is that doing this reawakened his original nature as Demise, and turned him into a giant eldritch shadow thing. The Zelda shown has since been fighting a losing battle to keep it contained.
I like it if I'm at all in the ballpark. The darker Zelda games are always better.