I would, on this new island, play with more natural, flowing shapes rather than geometric cylinders.

It's always helpful to do a little sketchy stuff first.
And I know, there's about a million lighting and structure problems in this edit, I just wanted to show a little bit of an idea on how the newest image can be developed.
I just felt that this towering structure deserved buildings to emulate the overall height of their foundation. It also helped to remove a bit of the stair-stepped geometric look by creating an almost triangular structure. That and some basic shading (with a bit of faulty lighting, my bad) to emphasize some areas.