My copy arrived today along with the character bible (for Genga lovers).
I liked it, the light-hearted tone was nice for a change. I enjoyed Yuuka's spotlight the most, some great expressions without going all out USC.
I'm only disappointed that there wasn't much Eiki in this part, and no Komachi at all. It looks like Part 6 will continue this storyline though (unless someone who can read the preview Kanji can say otherwise).
I'm glad they are continuing these, they are incredibly talented people.