Modular Plan for Cathedral Aisles, Nave, Clerestory - Idea , Breakdown & Issue

Looking at my observations and blueprints of Ely cathedral, I have come up with a plan that will allow me to approach creating assets in a way that will be both efficient and be capable to giving a level builder / designer as much freedom as possible with the environment they can create.

( Fig 1 )

 
The initial idea was to break down each aisle, triforium and clerestory into columns such as the (Fig 1). After studying the structual forms of the building I found it would be hard to replicate.

 Fig 2 showcases the aisle, triforium and clerestory sections from above in red, the green is the Nave which would just be flooring.

( Fig 2 )

After looking at the piers and pillar structures, I noticed that I would have to create the pillars equal each side of the modular assets which was not the case with the real architectural designs.

As you can see from Fig 3, The left and right section would not fit in the middle as the pillars are on the wrong side. This leaves me no choose but to look at how I can create a varied environment but still keep the Romanesque feature intact.

( Fig 3 )

This issues will have to be looked at once I've started to create the assets to test and see what I can adjust or re design to fit the aesthetic style I'm looking to achieve.