I agree, the Bonfire of Dreams omission really is a kick in the nuts to any real Berserk fan. The only moment it was adapted for the new adaptations afaik is in a small segment of an audio drama for Berserk 2016... And even there it was badly reduced and poorly executed.
I can't say I'm a fan of the trilogy, I would say I found them mildly enjoyable at best and quite bad most of the time but even at its peak, it never really felt like something I would consider as a valid Berserk adaptation.
My brightest expectations for this would be that they can consistently flesh out the story, maybe even adding stuff like Guts' childhood, Casca's flashback, more character interactions, maybe even fixing Skull Knight's introduction, and as for technical adjustments, better editing, fixing the CGI and the awful shaky cam they loved so much and stuff like that. These enhancements would certainly make them much more watchable. Yuki Kaji also confirmed recording new lines for Judeau so that's surely something more I look forward to, as he was one of the highlights for me.
As for the music, Susumu Hirasawa's involvement is for a new OP and insert song(s), I'm not sure if he could do even some more BGM, that'd be lovely. I'm not overly excited about Shiro Sagisu's music but if he can provide more emotional / dramatic orchestral music that would make me happy. His action music was quite terrible imo, especially with that Special Choir he loves so much. Surely I look forward to the Bonfire of Dreams, whether it'll have Hirasawa new music, "Guts" or a new Shiro Sagisu piece, I have high hopes for it! If they get a commercial release I'll be most pleased.
I can't say I'm happy yet, but these news bring a smile to my face.
Also, it has been announced that at the Berserk Exhibition they will also distribute posters from the new key visual and at an Aniplex event they'll distribute a collection of artworks from the trilogy (I suppose the ones in the credits of the third movie, directly adapted from the Miura illustrations for the manga). If I were in Japan I'd love to get these myself.
https://twitter.com/berserk_mePR/status/1556565884394565632