Other than waiting longer for the tank to mature?
It depends on the corals you want to keep. Your current rockscape is pretty vertical. Doesn't leave a whole lot of room to add corals that need different flow/lighting requirements. Now, if you plan on putting a bunch of stuff directly on the sandbed, then you're in a great spot.
Personally, I still like a tiered approach with my rocks. It allows me to put corals in all different areas, filling up the rockwork completely.