Regarding the tower, this is my design.
One can compare original alloy tower with new one we did in stainless/teakwood gratings/FRP roof. New tower is wider and easy to access, this is favourite place for guests to sit when running between islands. Note that all parts of new tower are structural and functional at the same time: for instance, handrails and ladders provide frame structures...
Sure, tower is not top elegancy, but please have in mind that the whole boat exterior is 'workboat' style. We did complete refit of this 87' trimaran during last two years.