How crazy would it be to make a base structure out of light diffuser only? So instead of rock, everything would be light diffuser. This would allow plenty of room for placing frag plugs wherever you wanted.
It’s been some time since I’ve seen or heard someone mention a remote DSB, but what if all the rock, media, etc was remote (rock cooking in garbage can with no light, with a heater, and water stirred with a pump/power head) and plumbed in-line with the tank return? There would be as much bacteria as needed and it would all be out of sight.
Just a crazy thought that’s been floating in my head.