20 main Princesses ruling their Reigns around the Kingdom, at least 2-3 times that number of secondary Princesses, usually without a Reign, without their own route, but adding spice to the Kingdom.
I plan to make it wide and tall, there's no reason not to. Desert was one of the Princesses with the less content, she's getting a lot of it right now, while Scarecrow (which took me only 2 days in order to have her becoming recruitable), won't get any for a while.
I totally see your point but I'm 100% serious about reaching that "wide and tall" goal.