I'm actually really curious to see what went down in the cave, since the trailer was definitely putting an emphasis on its consequences for the situation a year later. I do think that Suzaku could have killed Lelouch right then and there (and the directors have said as much), but that he would probably feel the regret set in with the same immediacy as with his father's death. And most likely with much, much more intensity considering that it would have been his second murder in blind rage/impulse. I wouldn't be surprised if he turned the gun on himself not long afterwards. The only thing that could hurt more than murdering your own family is to hurt someone that you chose to be close to and believe—namely, a friend.
Also, if Suzaku doesn't need cookies, I don't know who does. . . . actually, scratch that, the entire cast could use a batch.
Re: Some mighty big claims you got there
Also, if Suzaku doesn't need cookies, I don't know who does. . . . actually, scratch that, the entire cast could use a batch.