Hi! Thank you soso much for your feedback.
1.For fishing there are planned future zones. For now, the lake is the one that has the hardest and valuable fishes, but in the next update there's a couple of extra fishing rods, some accessories, and a lot of new zones to fish.
2.It is not possible, I'm afraid. Hero's Harem Guild is a story driven game about a group, everyone will have time for their development of their stories, but it won't be possible to have like 15 levels of purely one girl. That will make the development almost infinite and won't let me really progress the story. The girls needs to interact and live with each other to progress, same with the MC or other characters.
3.The guild board is completely optional, you can send girls to missions and retrieve them anytime without a problem. Whenever you want to interact with a girl that you send to a job, go to the guild board and click her icon. She will instantly stop working and she will be around. But yeah, after the prologue you will have a couple of Guild Recruits that can work there, too!