I just really wanted Hitomi to meet back up with everyone in the future (maybe not Yuito, that would be awkward. I imagine that grave in the ending montage was probably his). Still, I enjoyed how it went too.
That's what I thought with the grave, but I don't know what they would've done with meeting them regardless. There was already a climax earlier and it might've been hard to incorporate another. I really liked the picture book and I thought that tied things up nicely, although I was kinda expecting some future meetings. Her interaction with granny Kohaku was kinda sweet, though. ---