All your suggestions seems fine at face value. However, please allow me to gently refute you.
Consider the following:
- "Tone and feel". The tone of your ideas departs from the adventure roots of this game.
- Time, resources, and limited budget. Mr StriveforPower dev only has so much free time. Your ideas seem like about 4-8 months of dev time for about 5 people. Realistically, it's not going to happen.
- Finally, the ideas you are talking about already in place... in a different game. It's called "Free Cities." FC is a brothel, harem, and city manager game. It's very broad in scope, and also exacting in detail. The trade off for this is that FC's all text based. Anther game in early dev you could try is "Stationmaster." It's like FC, but rendered in 3d.