Looks OK, just one thing you may want to consider from a derailment point of view. The point going into the sidings along the wharf, you have a LH point then a RH and this is best avoided in model form as stock doesn't like being shunted through S bends. It would operate smoother as two LH points. You could operate the points either end of the passing loop as a pair as well if you wanted.
I'm guessing by the power feeds this is DC so you possibly have gone overkill. To operate one loco at a time with a couple more isolated simply by turning the points you only need feeds A, E and H and if using live frog points the isolating breaks on the inner lines can be half way along the top passing loop, you don't need one at either end and the wharf sidings don't need them at all as they are open ended lines. Isolate the fiddle yard then power into the toe of the first point.