The four greenhouse version just didn't work for me when I expanded the design. But I still thought there was something there. So I took a greenhouse out and added a run through shed at the end. Perhaps this could be a recharging station/workshop for the HAWE's. This shed serves to hide the circular nature of the trackplan very well. It is also stepped back from the greenhouse fronts to add some depth to the model. I have to say that I really do like this larger version of the plan. Three greenhouses to me, seems to be the right amount. I've drawn each doorway with a different door for variety and I think that the shed at the end as a scenic exit is a different feature.