Before we talk about sinking islands, is there nothing that can be done to increase player density? Is BM doomed to shrink and shrink until it's dead?
No, but the density is a problem
now that doubtless contributes to the shrinkage itself.
Like I was saying on IRC the other day, when the patient is bleeding out, you don't worry about his smoking habit.
I'm working hard on improving the game so that people will want to stick around more, but a) I'm only one person, and b) that sort of effort, even if it's perfectly directed, will take months for the game to even begin to feel the effects.
