For the most part, I'm happy with the campaign that just ended. I had fun, the players had fun, and some neat stuff happened. However. As there's always room for improvement, I do have a few specific things I wish I'd done differently.
One of them is Session 17. While it's not like it went badly--to the contrary, it was one of the more amusing sessions--I do wish I'd done something along the lines of this new technique Robin Laws has devised: You Have Already Planned. It would have been more in keeping with the style of the campaign, less absurd, and probably more fun, particularly for Captain Blank, who got stuck in a bad position at the end of it. We managed to salvage it, but note that the fight in the next session was not a purely in-character matter.
This hand-wavy off-screen planning thing is brilliant. An interesting way to divide player knowledge and character knowledge. I am almost certainly going to include it in the next campaign, unless I run a campaign without appropriate hijinks. But that seems a slim possibility, since all the good campaigns I've run featured hijinks. The ones that lacked hijinks were pretty awful.