How many factions are there?

I wouldn't advocate for creating a new faction – there are already plenty. I couldn't even choose my favorite from the 5 available... But a castle for the outcasts definitely needs to be made.
And the division into "good" and "evil" won't work, because even the Necropolis has its own cult, its own life, it's just that their perspective is different from ours. And what about the fact that angels are more bloodthirsty than hellhounds? Therefore: "good" are allies, and "bad" are enemies. And it will always be that way!

Right now, there are already 8 factions (7 cities):
Humans
Outcasts (without a city)
Sylvan
Dungeon
Necropolis
Inferno
Fortress
Academy
+ (potentially) Stronghold
The balance isn't perfect, but it can be improved. In general, each faction has its own tactics, and there's no point in endlessly increasing the number; we need to work on the quality. And it's rare to be able to combine quality and quantity.

Better less, but better! This is a reality of life.