Or at the very least you could mothball the terminal which would be a lot cheaper than keeping it open. If you define an airport as being “full” by the runway(s) being at max capacity it will be a very long time until GLA and EDI are full. EDI growth appears to have plateaued for the moment and I think GLA is actually down a bit - presumably the reduction by FR. As such, there is no likelihood of PIK being “needed” for pax overspill in the foreseeable future.