I suppose, it leaves room for a sequel with Louis's new adventures. Although there are several other daemons mentioned in the game. The child stolen from Venice and other Louis's siblings, including Augustus mentioned in the end. Emily and Emma, even Elizabeth, if she survives the island. The sequel can take place even in another history period due to daemons' longevity.
Looks like the developers simply forgot about it. I received the traits for Napoleon, Wollner and Holm's traits at the start of Episode 5, because the decided there should be no more traits left. Or maybe it was a bug from the start and nobody simply knew it. I wonder, whether you receive the appropriate talents for profiling earlier in the game in the current version. You should complete Napoleon and Wollner in Chapter 3 and Holm in Episode 4.
Although several characters are left with incomplete profiles: Sarah, Asahel and maybe Servant (found another trait after posting, not sure it's the last one).
Several times in the episode vulnerabilities don't work.
- Conversation with a servant, guarding small salon.
- Wollner's confrontation in chapter 9.
- Piaggi's confrontation in chapter 10 (only one of them).
Also, there may be a bug with Napoleon's resolution in chapter 9 - people cannot succeed in it.
Can we gain the experience for vulnerabilities (and add them to the journal) and the task retroactively after a patch or should we replay the episode?