Honest opinion

[BT05]

Structure could use a bit more height and looks too symmetrical for me. When you are standing back, most of the focus is on the bottom half of the tank and it looks quite similar from all angles. You can try the support structure thing, but judging from the size and shape of your rocks, that might not work out anyway...

In general, try not to make it look symmetrical so it looks more interesting. Try making a cave on one side of the tank, and leave the other side opened up. Should leave you with enough rock to stack adding height to everything. This might look a bit wierd at first, but if you place your corals accordingly, everything should fill out. When rearranging rockwork, leave it for an hour when you think you are done then come back to it for a fresh look. This will help you decide what you really want to do with it.

What you have now allows all your corals get a fairly even amount of light regardless of their placement, but it just looks kind of plain. If nothing really works other than the current setup, focus on hiding your equipment and I think it would look alot better.