I was asked to show my engine cover pictures.
These are covered 3/4" plywood. They replace both the interior hidden steel cover and the exterior vinyl covered bubble.
They sit flat on the bulkhead and are held in place by about 8 sheet metal screws.
The material is speaker cloth and the passenger seat sits all the way back against the fire wall.
Most importantly they are sound deadening, are their own firewall and largely concealed by the seat backs.
There certainly could be other shapes to arrive at for aesthetic purposes but the point is there absolutely was no reason what so ever to build the car with the original bubble with such an intrusion into the cabin.
I would state, "form follows function", leave it at that and not search further design wise...but you could play with shapes on the small raised panels I suppose but none are really focal points
When the seats are in position, the only thing that you notice is the elbow pad and the flat black material de-emphasizes the panels.
My manual parking brake assembly is also gone since it is no longer necessary with the electric parking brake that works off of the push button on the console. So a normal undeformed human can actually sit in the passenger seat.
Yes that is a roll bar also.