Dwilight, is the continent I started playing on, not so long ago. I chose it because it seemed like people were a lot more active on the forum about it, and I absolutely did not like the idea of people having more than one character on the other continents. And in the end, i think I made the right choice.
If character density is the criteria for choosing the island, rather than player density, then a simple solution wwould be to increase the amount of characters per person everywhere. But I don't think that's what Tom is looking for.