Well, that was a great finale for sure.
I think any flaws in how much or how little the actors/characters had to contribute was due to the writers trying to pack SO much into 42 minutes of air time. That could've been a two-hour finale with a little more depth for everyone. That for me is why the ending felt a little rushed and unfinished.
Overall, I thought it was great!
First off, I got no problems really with Peyton - I don't think the writers gave her much to DO in this episode. MOREOVER, I think they basically used her to set up a possible lead in to Season 4 - I mean, c'mon, an ex-Irish terrorist who was "protecting someone else" involved with the murder of an FBI agent, whom Mac has sworn to track down, and now Mac is going to London? Gee folks...kinda, sorta, maybe?
I thought Sid and his hat were fun. I thought Flack in something other than a suit and tie was VERY nice, and that Mac in Wet Black was also VERY VERY nice. I'm still indifferent to Danny/Lindsay, but, I got no beef with Mac & Peyton, so I'll try to give no S*** to people for their prefs in pairings. Hawkes was great, nice to see him in more of an action role. Poor Adam, but at least as the "red-shirted crewman" of the show for now, he survived the episode, and will hopefully have some better parts in shows next season as a result of his trauma outside the lab.
Definitley better than CSI:Miami,; we'll see how LV does with the miniature killer finale. But for me, NY has risen to the forefront of CSI show this season.
I'm definitely looking forward to next season with more hope than I did prior to seeing the finale. A+