I can't believe I'm saying this, but maybe they shouldn't release even more content. That game is jam packed already!
You think you're done and then BAM! you're running a fish farm and an actual farm, then BAM! you're running errands for a mermaid kingdom, BAM! you're doing a whole side quest under the ice sheet, BAM! you're opening branches of the sushi restaurant... etc, etc, etc...
I love to see a game with tons of a content but I fear they may have overdone it a bit.