I’ve become curious about desk and table tops that appear seamless, yet conceal storage and ports. it’s an interesting idea. If I was to do this, I’d hold the panels in place with rare earth magnets, but main problem is that if you put the panel in the middle of the top, then you have to have a way to pull the lid off, which means either a handle, or a scoop to lift it out. Placing the lids around the edge allows the lids to be lifted off (assuming the lid overlaps the edge) eleminates this problem.
Of course, placing the storage along the side in little concealable drawers is also a solution.