Executive Meddling: The reason we didn't get to see Project Soul's vision for V come to fruition. A few years in, Namco cut PS's funding and staff and then forced Project Soul to release SCV early in order to capitalize on the relatively weak end-of-January market. What Could Have Been, indeed...
Fan Nickname: There are quiet a lot of these made up by the fandom — "Sieg/Sieggy", "Soph/Sophie", "Cass/Cassie", "Raph", and "Mitsu" are some prominent examples. Xianghua is often just called "X" due to the difficulty in spelling her name.
In V, fans came up with "Patsuka/Petsuka" for Alpha Patroklos and "Oprah" for Pyrrha Omega.
As a carryover from Tekken, Yoshimitsu is usually called Yoshi for short, but his successor, Yoshimitsu the Second from SCV, is alternatively known as Yoshi II or, for extra punnage, Yoshimitwo.
Project Soul originally wanted a Dead or Alive character, likely Kasumi, to be exclusive to the Xbox version of Soulcalibur II as the DOA series was exclusive to the brand at the time, but couldn't get the rights due to Itagaki's feud with Namco over the Tekken series. As a result they got Spawn to be the Xbox guest character, since they were already partnered with Todd MacFarlane to create One-Shot Character Necrid.