Board Thread:Episode Discussion/@comment-24573226-20161003151422/@comment-26018514-20161009013039

Gastropod wrote: They never intended to (or at least, never announced any intention to) create more than 1 trailer/short for Volume 4. That was a rumor spread by misinformed people and it really bugs me how widely believed it was/is. It annoys me even more that people are being childishly upset that Rooster Teeth isn't delivering something they never promised to deliver. I don't see any reason to assume this lone trailer was their only intended one, I think it far more likely they intended to create another once this was done, but that with the change of software and exploring new features available to them as well as problem solving they realized they could not early on.

That said I think they realized this early and thus "Promised" nothing. It just seems like the other 3 girls were a hell of a poorly added after-thought, but far better animated than what they were doing deserves, thus why(to me at least) it looks like even RT entertained the idea to make more, but shelved them and fully developed the best model image scene of the other girls to insert into the existing Trailer.