I'm sorry but could you please elaborate a bit on what you meant by Kaneki being "Too cold and too cruel?" Perhaps you meant that since Kaneki no longer shows mercy to his enemies he is now colder? From what I've witnessed thus far, Kaneki is no colder than any of the other doves who carry out their duties with utmost efficiency, he hasn't done anything particularly "cold" or "cruel" given the circumstances IMO. I still think it's a bit too early to try and pinpoint where Kaneki is right now in his current state. Though if anything, I find the current Kaneki to be more of a realist than any of his other personas. Though I do agree he does give off that sort of "dark" vibe if that's what you meant.