>>25338
>1
I can understand Twilight not getting close to Celestia due to Celly being her teacher. And for a turbonerd like Twilight, a teacher is a God.
>2
I blame this on "show for little kids" and the 22 minute time limit. You'd have to set things up for that scene to not feel awkward. There are a few characters that in the later seasons would fit nicely for such exposition dump, for example Granny Smith, who should remember or at least know that it was Celestia who gave her family the land that is now Sweet Apple Acres.
>3
You forgot the one where they switched places and realized they know nothing about each other's lives (my fav part was Celestia controlling the Moon like if it was her first time).
But seriously, I got nothing. Looking at how those two episodes went maybe it was for the best that we never got any more of them? The few episodes that Luna got all involved the Mane 6/Twilight/Glimglam saving her ass or fixing the mess she made, so I'm suspecting a Celestia episode would end up the same way.