Your tank so it needs to meet you tastes but since you are asking
It's a little hard to tell but it looks like most of the current LR you have in there are smaller pieces. You might consider getting some much larger base pieces and then rearrange around those large pieces. In the process you could raise the top of the reef in relationship to the lights giving you more flexibility in placing corals in the tanks (ie not having to have a bunch of 12" pieces all across the top ridge. Consider forming a slope, starting maybe half way across , from left to right. Really large, tall pieces could then go on the right without being too close to the lights and it allows you to break up "wall effect".