Testing itself was a bit obvious in how it established itself, and in learning the lesson (that everyone learns differently). Pinkie rapping, a bit more worldbuilding, and Fluttershy's bizarre animal play (apparently written by Spike) were the highlights, but it felt more lacking.
This is, of course, compared to the "Key" episodes, which have been very strong on the whole
Monster Hunter: pissing me off since 2010.