Sweet, I've been looking forward to this! Personally, I suspect Marisa's writing to be surprisingly astute -- despite her general craziness, she is very good at what she does. And she already keeps diligent notes of her own work, so I figure she'd be just as thorough with other people's stuff, as usual. But of course she'd have to keep her sense of humor (and more importantly, ZUN has to keep his). Either way, I'm super curious about it.
...I kind of dread waiting for it to be translated, though. BAiJR and PMiSS aren't even finished yet. On the plus side, it also means getting excited each time a new bit of translation comes out.