Think it was due to not wanting to shrink the CTA, which already has limited space and also now has to fit in a new station. When the temporary drop off zone is moved to the new multi-storey I would expect to see this area to eventually become another apron with around 4 nose in stands as the consultation has already hinted that another apron could be squeezed in together with a modest increase to the terminal capacity to bring the total to 21 million as an interim measure.