Mafia: general discussions.

It would be a chaotic mess, or an overload with the number of neutral roles.

Each role has its own characteristics, and it will be difficult to play.

A few months ago, I already wrote that it wouldn't hurt to slightly reduce the difficulty of the games, but, as it turns out, few people want such settings. In the end, everyone wants to have an interesting role, with an interesting description, interesting actions, and unique features.
Regarding the chaos – essentially, it wouldn't differ from other settings in terms of the number of kills; the only difference would be a longer duration. Overall, this presents a certain challenge for both players and the GM, especially. For players, it's probably just analyzing the nightly events, but nothing more.
On the other hand, such a setup would allow for an epic game, with full team compositions and a full, unreduced town, moreover, one that poses a certain danger to the mafia, not being a flock of sheep that can be slaughtered without consequences (this refers to the roles and their characteristics; clarification, just in case).
And, in fact, what I think is that the next game (after Lorelei) will be mine, and I will most likely try to create exactly such a setup. I think everyone would be interested in trying such an experiment. And in case of a significant shortage of players, well, I would remove one team and weaken the town.

Added 1 minute ago

Raven, we also need to think about how to handle the kills. If there are three mafia, a serial killer, a town marksman, and other joys of life, then you can easily eliminate almost a third of the players in one night.

This will depend on how it turns out. In my 21st game, it was possible to have up to four kills per night, and on the third night, there were only 4 corpses.