LTNman -
I don't think 16 EZY 737s will 'fill' Luton if they all night-stop. OK there are other night-stoppers, a couple of MON, an FR 732 and maybe a BY757, but by my calculations LTN has plenty of stands, without resorting to remote parking areas.
Also, not all LTN-based EZY 737s night-stop. There is one away in ATH and another 2 doing late BCN/AGP.