I've played the game and was wondering if there is any "You Lose" or "You Win" Scenarios? I can dig a whole endless play style and I never came across a situation where anything but gold went into the negative and even that wasn't that big of a deal. Maybe adding a "You Win!" screen or pop up after 500 population or something with the choice of continuing on the same difficulty or maybe doing a new game+ with an even higher goal would be nice. For the "You Lose", I would imagine having 0 Population would result in a loss, having happiness at 0 or maybe a -20 or -50 could result in a loss, and say a -500 gold could result in a loss as well.
The New Game+ would start you off with say 200-250 population, 150-200 Happiness, and 300-500 gold with increase in difficulty and an end goal of say 1,000 population or something. Could essentially do this endlessly an just adjust the number to have higher risks and higher rewards for your choices and each New Game+ could add cosmetic changes to the king and his throne like a trophy shelf, nicer throne/clothes/crown, so on and so forth.
Other then that I like the ideas of switching scenery to get to new locations with different decisions, checking on people, and deciding where buildings go. One idea I had and I'm sure others have pitched is changing how the king looks, having a customization option to change hair color, beard, and maybe face.
Other then that my last idea, concerning the "You Lose" part of the game, while not reaching negative in stats or stat of 0 is one way to stay alive, I was thinking about the wrong decisions could result in a loss. For example I was drinking the Butlers "Special Tea" that cost 10 gold and he always seemed so shifty the whole time during that and I was just thinking "OH GOD HE'S POISONING ME!" but after like 10 cups I just figured he's being creepy. So maybe a decision of the butler poisoning you could be one and say drink 3-5 poison teas consecutively could result in your death or basically a "You Lose Scenario". Other's would be like sending out the dragon blade with the wrong hero and the dragon comes back to kill you because the hero fails, letting the wrong person join your court or guard and ends up being an assassin that kills you. So on and so forth. Not saying the butler will poison you every time, and if you get suspicious you could send skelly or the mold to investigate.
Well that got me to thinking about another idea; Skelly, the mold, and the other various people who join your court or end up arriving in the city tend to be just there and random. So having more impact to the decisions could lead to relying on random chance of the right person arriving. So what if the various people you can add to your court or various unique people like the witch, skelly, or the mold, could be sent out to deal with problems or decisions that require you to choose one of these people to send out instead of just a Y or N. This would put them on "cooldown" since they are away, Skelly and the Mold would both be investigators but specialize in different stuff, the witch and wizard the same way, so on and so forth.