I'm actually looking to do the exact opposite and add as little rock as possible to my new tank. I feel like heavy dense rock work could never get enough flow to clear out all of the detritus and becomes a trap for dangerous dead zones. If you were to epoxy 3 or 4 extra large Caribsea arches together with two base structures at either end you would essentially have the same surface area to attach coral without all of the unreachable deadspots the support rocks in a wall create.
I know old school reefers use to build walls and talk about finding a fish still living when moving a rock after not seeing it for years because there was just so much rock in the tank. I like to be able to see all of my fish and have their caves at least partially visible.
It's not really the aesthetics that bother me as much as the lack of access and water flow. I love how things are moving towards floating reefs to allow for all of that flow and open space below and around the rocks.
But that's the great thing about the hobby, there are so many ways to have a successful tank, doing what you like best will mean you're more invested in the tank which will yield better results.
