I doubt we will see Manji since Haohmaru is already that type of character, and they even share similar facial expressions and some of the phylosophy; Haohmaru is basically Samsho’s Manji, only without the bloodworms… plus Manji’s swords were already used for Shiki. As for a character out of Blade of the Immortal, both Shiki and Angelica were based on Makie Otono-Tachibana from that manga.
More like, using advanced 2D-oriented system for 3D because of 3D hype at the time was their mistake; however a 3d ss on the hyper (SSAZ) is still a very good game, and an example how to do 3D (2.5D gameplay) samsho right.
By the way, at that time designers mentioned that they enjoyed to work with 3D in a sense that it easily allows for modifying character models, adding new costumes (for Shura/Rasetsu versions of characters being different-looking), and using cinematic camera angles.
Was done already, and was released on PSX in 1999. Wasnt too well received because of several factors (to put short, brilliant team of designers/composers/scenarists was “outshined” by non-talented 3D modellers that did some heavy polygon economy on character models)
I fail to see where are you gonna stick hip-hop themed soundtrack (well, unless they will have a personal stage for J). Samsho was always known for using authentic japanese music (and in case of overseas characters, they tried for authentic for that character music too).
Kitasenri is too good for an artist, because she did Sen character artworks, character models and their faces in that game look retarded in comparison (I mean look at Suzuhime, or Takechiyo faces ingame and on artworks).
As for the Asura/Shiki love, the people who showed most of it recently do belong to MAMEdev team, not SNKP. SNKP’s versions of Asura/Shiki in NGBC have a number of moves/tactics threwn out and dont have the playstyle of their original incarnations (well you can now play SSAZ and compare yourself).