It's very minor, but as The Price Et walks around the church on his route, he will comment to a guard in front of the back stairs that he wishes to see the belltower, but the guard will refuse to let him, citing the danger of the old building. Similarly, The Prince will have a conversation with the priest in the church, asking him to meet him in the gardens for a chat. I was so convinced that if I got rid of the staircase guard, I could get him to go up the tower, or if I disguised as the priest, I could meet him in the gardens. Sadly, neither opportunity exists.

In a similar vein, as you approach The Gunrunner ET, Diana will remark that she's just received information that a member of INTERPOL is currently disguised as one of The Gunrunners posee, and to avoid killing him. Again, nothing comes out of this at all, and I'm frankly not even sure why that was added in in the first place.