If the attic is accessible by means of a hatch, it's accessible for storage, and must be designed for it. Which means joists that meet load requirements, provision for proper insulation underneath the attic floor, light, etc. there should be at least one light there, with a switch accessible from the attic entrance, IMHO. Now, arguments can be made on this. If the attic is 12" deep in cellulose insulation and you can't even see the joists, letalone have a solid floor to stand on, I think you can make a pretty good argument that this attic is not suitable for storage. Not that the HO won't toss boxes up there anyhow, but eh.
As a homeowner, I'd sure like to see lights up there. In fact, I retrofitted lights in my own attic just so I wouldn't have to keep dragging flashlights up there; it's hard to walk around holding a flashlight when squatting, precariously balanced, on the 2x4s and sheets of plywood the previous owner and I tossed over the 12" thick insulation. Also, it's surprising how much weight you can put on a ductboard duct without collapsing it!