I like the second idea, it gives players more to work for instead of getting bored after obtaining animals, & finishing their islands & such. I also think it'd be a cool idea if a the maximum island size limit was raised once unlocked at level 200 or something around there, so on so forth. Of course the limit would not be raised by much, or that would be too OP, just enough to satisfy the player to keep working at their island & unlocking a larger island size.