The bridge carrying taxiway Alpha was was meant to have been by the Holiday Inn but ATC objected. This made the central area smaller than it could have been.
Not true. There was a suggestion (no more than that) to put the taxiway into the back of the compass base but it was rejected for a lot of sensible reasons.
Without a lot of other work (re-alignment of twy B, demolition and re-location of the Fire Station and Switch House One with all the associated airfield lighting cabling for a start) it would never have worked particularly in Cat II/III. It would also have made precious little difference to the capacity in the central area.
Do bear in mind the vision with all this was to build the terminal building down the hill next to the railway station (and all the car parking) and to have a people-mover (why there is a second bore under the twy) up to what should have been just the departure lounge. Someone ought to go with the vision.