On one hand, I'm interested in learning more about Subject 16. I felt that one of Revelations' biggest flaws was that it completely wasted his character after two games of buildup. On the other hand, those first-person Desmond sequences were dreadful, though part of that was due to their ultimately inconsequential effect on the plot; they didn't tell us anything about Desmond that we didn't already know (He was an Assassin-in-training, ran away, became a bartender, and was kidnapped by Vidic).
Someone in the main thread brought up a good point about how the Desmond sequences should have been modeled after the final Subject 16 sequence in Brotherhood, where you're in some weird room that builds itself while you're running, jumping, and climbing around.