Forgive me if I am a but cynical, but new shops and restaurants in an airport doesn't do it for me. The queues in Pret (both branches) at peak times are far too long to bother with.
Is there any chance of the quiet seating area, downstairs next to Itsu, being refurbished... a couple of coats of paint on the wall and recovering the ripped covers of the foam on the benches would make me really happy. Maybe also put in fresh roof tiles and a new lino floor in the coach station waiting room