They do seem to try harder for arrivals:
- Fast Track available for anyone in F/J, not just for non-EU passport holders like LHR
- Separated baggage belts for F/J and Y
- Most intriguingly (and only because STN is a cheap airport), you can get a free baggage cart from the F/J "cart point" by showing your boarding pass.
But the shuttle train from the contact gate to the terminal building was pretty awful - big crowds, long waits.