Disclaimer; I have never read the manga, so any deviation of this anime adaption from the manga does not affect my opinion, as it seems to be a gripe with many people who have reviewed this part of the TG franchise.
Tokyo Ghoul RootA is... a mess, to put it kindly. There are things that I liked about this series over the last one, such as more time devoted to The Doves, who I think are interesting as a balance to the world of Antique and the ghouls. I also thought the music, like the last series, remained consistent with the mood of the story. I liked a particular scene where they talk about coffee, and I enjoyed hearing about Yoshimura's backstory. However, the series did become slightly as I had imagined before watching the first series, with not much justification to the violent storyline for our characters. And the pacing is just all over the place, and I feel that so many of the new characters that were introduced had absolutely no impact on the story. It never becomes unentertaining enough to be called "bad", per-se, but it still feels like a disappointment after the first series.