Few months ago, I got this wild hair to do something drastic. So I took a lot of my live rock out and put it in my sump. I wanted to see more of my fish and figured open water might force them out.
Not good. Not good at all. It had the exact opposite effect that I was hoping for. The fish coward in corners and were extremely skiddish. When I approached the tank they collectively went nuts. I left it this way for about 4 days to see if they'd get used to it. Not so. I put the live rock back in the display tank and all of the anxious behavior ended. Point of my story is that piles of live rock give the fish the security they need to hang out in the open so that you can see them. I think defined territories are important in that each fish should have a spot that it can call home. Secure fish are happy fish IMHO