I have the Baja Rack flat utility rack with cross bars instead of the mesh. The bars occur at about 4" on center across the width of the rack. I like the bars and don't find myself standing up there very often. I will stand up there occasionally and I don't see the bars as being a problem.
The mesh looked like a rust catcher to me. I painted my powder coated rack with Rustoleum paint before I installed it. Later, when I had it repaired because I backed into an overhead pipe, I had to paint it again because the welder scratched up the edges by sliding it around his shop. That was easy. It takes two people to get the rack up on top.
I like the flat rack for loading long gear, lumber and canoes on top. I've had 7 sheets of plywood on top and another time I put 10 or 12 pieces of 16 foot long 2x lumber. You can't load long lumber nearly as easily with a basket style rack. It's easy to tie stuff down from any point by looping around any of the bars. I often tie down a couple of shovels, boxes, firewood and propane tanks when I go camping using several pieces of rope.
Now that I lifted the truck I'm really glad I got the flat rack. Otherwise the rack wouldn't clear my garage door. A basket style would definitely not clear.