Castlevania: Resurrection was cancelled for the Dreamcast due to various reasons, particularly the rise of the PS2. Fine. We know a few of the artists and music people behind it (I count 3). Fine. However, there are a host of screenshots that seem to show the game in action over a variety of levels, and the art director said it was playable (and better than most Dreamcast games), though still needed additional physics and art elements. So, why has there never been any videos put out of the game in action? Yes, we have an intro CG trailer and few seconds of Sonia running around in an empty room, but it's been well over 10 years, and you'd think that a programmer or level designer would have talked about the game more in-depth or put up some sort of video.
Now, the art director did state the game was sent back to Japan after it was cancelled to study for future 3D Castlevania entries, but someone must have had some evidence leftover, right? Depending on how you count, it's been about 15 years since this game had any traction, and there is turnover all the time in the games industry. I doubt anyone would get in trouble for coming forward at this point. After everything that's happened to Castlevania in 3D, I want to see and know more. (For instance, I want to know how much platforming would have been incorporated. I saw a few screenshots with either jumping of death pits, but not a lot). As time has gone on, it really does seem like it would have been an interesting entry to bookend the N64 games. It looks like it was using the 3D space for a variety of scenarios and the structure seemed to use vertical and horizontal space more so than the PS2 entries.
EDIT: From the CV Dungeon interview we have, we know that the Bottom of the Ninth team was behind CV: Resurrection. Here is a list of the people I could find involved in PS1's Bottom of the Ninth:
ORIGINAL STAFF Designers: Norio Takemoto, Greg Orduyan, Jason Elliott, Guy Burdick, Caiphus Moore, Bryan K. Johnson; Programmers: Ken Kano, Hiro Chiwata, Geoff Audy, Manny De La Torriente, Mark Hodges; Sound Design: Jun Funahashi, Mark Lindsey, Todd Davies; Producer: Norio Takemoto; Special Thanks: Paul Friedman, Evan Kaplan, Richie Hideshima, Makoto Ichikawa, Hironobu Kawakami, Ed Pearson, Vincent Fung, Tony Gascon, Caiphus Moore, Brian K. Johnson, House of Moves, Norio Takemoto, Greg Orduyan, Ken Kano, Tomoko Matsubayashi, Jimm Getz, Wayne Townsend, Paul Hellier, MLBPA, KCEO
The bolded is the guy CV: Dungeon interviewed. We also know that Mark Lindsey was on the music, and Jenny Ryu (formerly Jenny Chang) was on the art team (she later worked for Namco, EA, and Activision). Those names are not in the Bottom of the Ninth staff credits, though. But I imagine someone above must have been involved, since they said they were working with that team, as there were no others with the required experience to put together a 3D game.