When they built the new LTN terminal in 1999 (I think) they also decided not to bother with moving walkways and only a few escalators. That site, too, was shoe-horned in to an old spot (to save/maximise money?) and it shows. They had more space to play with but did not use it, money I'm sure, but disappointing.
Since they built that terminal, with it's inadequate drop off/set down and expensive parking, congested access roads (there is only one single-carriageway road in and out to the terminal) it's small indicator displays (of the vertical flat panel type criticised at T5) I have said that the designers and managers of LTN had learnt too many tricks from BAA. What was a lovely regional airport is now an awkward one. Just like STN for that matter.