I concur. An after interview with Silvia would have been great. I bought the clip and LOVED it (one of the best tickle videos in history, in my opinion), but it would have benefitted from an after interview for a number of reasons.
First, it would have given the video some closure. The full video ends, as many videos do, almost abruptly, as if the cameraman simply ran out of film. That always bothered me, but an after video is a great way to avoid that.
Another reason is that, in the Silvia Day videos especially, to hear how she felt about being tickled is something that would greatly interest the viewer. This video would have benefitted from an after interview more than others because you can see that this girl is truly suffering (she looks like she's in pain) while other girls always seem to be handling the tickling the same from beginning to end, as if they have infinite stamina. To hear what she was thinking and how she was thinking would have been a major plus.
Still, that doesn't detract from the fact that the Silvia Day video was incredible. I encourage anyone who watches the interviews to buy it. It really is that good.