I myself thought the game would have been an extension of bloodlines. We saw the graphics and the character customization and we just want a place to kill mobs basically.
I didn't want those things, I wanted the sandbox, an open world with things to do on it, going places, doing particular activities in specific places, having a reason to explore the map and I wanted I had gotten to care about what other playable characters were doing, not about killing NPCs all the day, like the average MMO is all about.
One of the latest announcements before the cancellation was the PvE was going to work in a different way, you weren't going to be able to kill all the things that existed out there and you'd have to find out other ways to achieve something and that was good, because Vampires are not the most powerful creatures in World of Darkness and it'd have brought something fresh, compared to other MMOs.
It was just going to be a new game based on World of Darkness, that's your connexion with VTMB, same lore and same universe, it could have offer things that Bloodlines couldn't, in the same way Bloodlines offers things Redemption didn't have.
I suppose you read the article of The Guardian about the developer who wasn't familiar with the lore, so, he didn't understand why the rest of White Wolf employees were so excited about what they were doing and that's why you think they were unsatisfied, but as it was said, they didn't leave for that reason, it was they needed some more years to develop it and CCP was losing millions, so, they didn't want to finance the game anymore, they prefer "Project Legion".
If you have watched the previous presentations, they explained it was taking too much time to convert the EVE engine in a character based game, if you read the manual for the Alpha testers, it explains the game wasn't working well in certain parts of the map, there were just 4 Clans, character creator just allowed you to choose
premade avatars, thus, game was far from complete and that was one thing CCP's CEO was sincere about.
I suppose, when they mentioned they were going to take inspiration from DayZ and Rust, they probably decided to make the game more focused in the sandbox and they'd care about traditional MMO game modes later, maybe in an attempt to release it early; the sandbox was the most important part for this game, because of the lore, also PvP goes hand in hand with it and it's not all about fighting, if not, trying to affect your rival in any way possible. Whatever they had in mind, they clearly stated the game
wasn't going to be released in 2015.