I've been playing for about an hour and have 2.5k gold and not very many opportunities to spend it. I still keep getting events like the grandma, timmy, or the cat asking for food/gold and this only costs 1 gold piece. I think their demands should go up as time goes on, grandma does have the soup shop but perhaps timmy should ask for larger sums of gold and become a spoiled brat or something. I also feel as if opportunities to spend larger sums of gold are not coming up often enough, so that's why my king is drowning in a sea of gold right now. Maybe I haven't been playing long enough though!
You're totally correct! The game was originally designed with a play session of 10 to 15 minutes in mind, so there really is no "late game" content. This is something I'm trying to address in future updates by adding plenty of new content and characters. I never thought people would be playing for so long, but it's a good problem to have! :)