Hmm, looking at the poll options...
Apple Family focus is never a bad thing for me. I would like to see an Applejack episode where she's completely isolated from her family for a change, but her kin is such a huge part of character that it'd be hard to imagine. I love all of the Apple Family characters anyway, and Apple Bloom, Granny, and Big Mac were all spectacular in this one. As for the lack of the Mane Six, it IS a bit odd considering they were all present in the previous key episodes. However, I'd rather them be absent if they can't contribute to the plot. Episodes like this one prove that Applejack is strong enough to stand on her own without the other five, much like Apple Family Reunion, which had a similar vibe.
I was never the biggest fan of the Flim Flam Brothers, but they really weren't overplayed here like they were in SSCS6K. The Tonic song was pretty good at best, but I would say I enjoyed it more than the first Flim Flam song. I dunno, the Flim Flam songs just aren't my thing.
I loved the journal entry/moral AJ learned here. She went out of her way to avoid the truth in order to keep Granny Smith happy, once again proving just how selfless she is, before eventually copping to the truth. Applejack FINALLY has an episode dedicated to her honesty, and I think it was played out very well. I felt the episode was well-paced too. I didn't find it "boring" per se, but it was definitely lighter on humor compared to Haber's other episodes. That said, I typically like episodes that are more tame in the comedy department anyway, and I was engaged strictly by the well done plot and Applejack's always-endearing character. So no complaints there either.
Applejack's key being a coin is a bit disappointing only for the fact that it really has no sentimental value to AJ like the other keys may have had to their respective ponies. That, combined with the fact that Shill was a rather forgettable key giver, is probably my only complaint, albeit it's a minor one.
Overall, a great final Applejack episode to top off her stellar season.