asethetically I think you nailed it.. I see a good focus on adding least amount of unusable rock as possible. Another thing I like is the rock you used is more flat surface and one thing i've notice is my aiptasia only grow on the reef saver rock where their are plenty of holes. I would never use a rock that has too many crevices its just a breeding ground for things like bubble algae and aiptasia should they find their way into your tank. In my case I used all dry rock and aiptasia and bubble algae free LR and still introduced them to my tank. I now find myself epoxying the surfaces to make it more flat and pest never seem to make it on flat surfaces with constant grazing of fish, wrasses, and snails. You won't have a problem with your setup since the design is not beneficial to these pest.