Did I never comment on this one? Wut the hay? I thought I posted in here but obviously not.
Well, it's a little late, but I liked it. It had some flaws, and I agree with some of you about
what those flaws were, but I dunno... they seemed more like moderate head-scratchers to me than anything crippling, and I was just having too much fun watching the ep to care all that much. Especially the problem of Daring not recognizing the (former) element bearers or, in particular, Twilight. Not only has this come up before (Sweet & Elite), but also, if anypony could be believably THAT out of the loop, it'd be Daring Do. She obviously doesn't have much contact with society at large, both by choice and due to her "profession".
And man, there was just so much to love in this episode! From the fangirling moments, to the part near the end when RD and DD actually do finally work together, to some amazing Dashie facial expressions.

Also the very idea of seeing Daring Do in the flesh, which I find delightful.
One of the best parts of the episode was when Twilight and Rainbow wrangle over what to do next by having a Daring Do Series Nerd-Off.
Overall, I'd say an A- from me. Not as good as the opener or Castle-mane-ia, but still an excellent episode.