Hi Graggle! Thanks for playing! Really appreciate your feedback.
Actually you can boost up the population growth speed by upgrading your base or building a lot of "Lodge" in the early game. I was thinking about making population grow faster but afraid that the game would be too easy (hehe).
My initial purpose was making players learn about how the game works while enjoying it. But maybe I should write a full tutorial of the game?
About disabling biome growth, actually I did consider making that function but then I thought like, irl when you don't use your land the grass will grow and cover and you have to clear it, so I decided not to xD. But I will think about it again :)).
