If you are even interested in a honest but mostly visual appreciation, because Pixie is the expert who would know what and what not would be plausible, I'd say that the density of islands in those areas you mention (and area A too) is a bit overwhelming perhaps? Specially in area B. In area A there are a lot too, but are least they are more spread around. I like area C a lot better. So my personal non-expert opinion is that less is more in this case.