Regarding the first Literature example set:

So Let Me Get This Straight: Instead of "tedious memorization and boring Drills," people are now learning a dead language by way of a Scrapbook Story? Or a bunch of Epigraphs from a Scrapbook Story?

I'm wondering if this can be considered a subjective trope or not. There may be a few fans out there who like the post script seasons of shows despite their glaring flaws.

On the other hand, it IS an actual fact that shows have been renewed for another season even though the creators already wrapped up everything they wanted to wrap up. It's the reaction to the Post Script Seasons, not the Post Script Seasons themselves, that's subjective.

I think we should take out the entry for Angel The Series. The fifth season was clearly foreshadowed at the end of season 4 and wrapped up Angel's conflict with Wolfram and Hart, which had been building throughout the series. It doesn't fit any of the characteristics of a Post Script Season save the fact that it changed the format, which makes it a Re Tool.