Croque_Monsieur said:
(1)
First to answer your question on whether the Root A ending will be considered for R: I'd say that the ending to Root A has been thrown to the wayside I think. The whole idea of Root A was to provide a alternate story beat. It showed to the audience what would of happened to Kaneki had he not gone off on his own like shown in the manga. He does something different but ultimately the ending is the same with a few more tragic twists. Because of these changes however, there are a few factors (necessary for explaining scenes and events in RE) which were not depicted within Root A. As such, for there to even be a functioning story without glaring plot-holes the studio has probably treated Root A as what it is: An alternative "What If" story line, and continued off where the original manga sources ended off. Best example for this is how they literally add in a scene to show a missing poster of Hide just to show the anime only audience "Remember when we killed off Hide in Root A? That didn't happen".
(2).
Unfortunately for you, while this series does indeed have quite a few fighting scenes its not a fighting series. Even the genre of the manga reflects this - its considered a dark fantasy thriller. Sure, people may look forward to fight scenes - but thats not really the point of the series. Its really not. Also, if one were to use that argument: Why didn't they animate the most hype fights from the manga? I don't know about you but I wanted to see Ayato and Kaneki duke it out. Even more so the Arima vs Kaneki fight (which is cool as a fight on its own but also has the "poetry" aspect to it. Like, why can't an action scene have both? Why are these aspects mutually exclusive to you?). Instead we got Kaneki flipping over CCG and police cars. Riveting.
I mean, if you want action scenes with no rhyme or reason I guess this is for you, but to people that like substance to their characters and world this pretty bland. To those manga readers its a "Yay now I get to see a slideshow sequence of my favourite characters with voice actors" series. This is pretty much the same with RE as it is now, its a sequence of scenes people liked from the manga with all the details (which pretty much make up the series) being excluded for time. Its fan-service.