Yes those first and last lists are far from helpful. I needed the proper District WTT to learn the correct departure sequence from Wimbledon at my commuting time in the mornings, so that I can confidently ignore the sometimes wrong indicator boards in the foyer. It warms the cockles of my heart to hear Mrs H referring to the "124 train" these days after I taught her too!
I wonder if this is a permanent policy change by TfL. Retrograde step, if so
I'm thinking the conversation may've gone something like this:
"hey guys heres the new last train timetables post them to the last train page" "ok" *posts to WTT page*
or they decided to remove them, which I doubt because they kept some...