The whole design is base on grids. By choosing specific points, the structure is divided into Diffuser part and Connection part. All geomotry is created according to point locations.
SInce last critique, I simplify the definition, which is only having 8 design drivers to control the scale of the diffusers. Meanwhile, I solve the the expension issue, so that the grid system can expend as many as possible.
Here are five diffusers.