Thanks for the report and pictures!
It's good to see that there is clearly marked SkyPriority access, not only for check-in but also for immigration and security. Am I right in thinking that T1A has centralised security, rather than gate security as at the old parts of the terminal? Also good that there is at least a temporary lounge now in action.
Is there any (air-side) connection between T1A and T1B/C at the moment, or do you have to go landside to reach one from the other? (A while back, I was told that there would be a corridor through from T1B/C near gate 14 - which would require relocating (part of) Java House - but I don't know if there's any sign of that happening yet?)
How was the 787?