Arielle, this is fun, isn't it! I like the points you raised, particularly these:
- blurring of vision
- JW's beautiful smiles
- the flaws/bloopers, your memory's superb
Another glaring blooper was highlighted in one NG clip: Songju was going to kiss Jeongsuh with the birthday cake between them but in the next shot the cake with candles lit was behind them.

You know, between us we could probably write a book on STH at this rate. Ha ha ha...