At first, when Ayaka showed up, I'm like "oh look, it's Ayacho's turn at that intermission sweet one-liner thing" and then she said "oshirase" and then I'm like "oh that's right the audition announcement (I read Amped's post before watching H!S)" lol She didn't look particularly happy to announce it, though I guess it's more because she wanted to make sure the message is clear by being serious about the matter (y'know how sometimes if you announce things excitedly you might not be talking in the most clearest of ways? No? oh, okay...) Though, I guess, seeing all her gen mates go, and seeing a bunch of new faces, might make her feel different about the announcement.
In any case, ^ I agree, I mean, I already loved the songs since the Budoukan preview, and with every sneak peak of the PV just keeps making me love it even more.