I've unfortunately realized this when i started having the slime algae problem. I couldn't get to a couple spots bc the rock was too. Ur absolutely correct.
There's a guy on craigslist selling his liverock at $2 per lb so I'm going to check it out. If the rock is ****, then I'll just go with reefcleaner non-live rock and wait till that rock arrives to re-scape. I think I'm leaning towards building up the sides and leaving some open space in the middle and front for corals. I just hate the thought of rescaping and kicking up all the sediment but I know I'm unhappy with the current setup.