Happy New Year to you, too!
I really enjoy those scenes where different types of villains get into ideological debates with each other. It makes the whole good vs. evil scale much less clear-cut black and white, while also adding a lot to the characterisation and believability of both of them.
Also, I seem to remember that at some point on the MotW forums you talked about the effectiveness of catchphrases and memorable quotes or patterns of speech when writing characters the audience should remember. This certainly works well not only for people like Stoic and Finley, but also in the case of Solik, with such classics as "As if that carries any weight. You people hate everything." I'll also never forget Pilc's brilliant imitation of Grinfrak, the "loud and witless oaf."
Regarding a possible X-Noir Let's Play: I would absolutely watch a playthrough of that game made by you! How is that even a question? I'm sure the insights you could provide on X-Noir would be very interesting to hear.
And on that note, just out of curiosity: Is it currently your plan to only make videos of your own games, or are you thinking about Let's Playing other games again as well?