It's incredibly sweet. Would have been fantastic to have seen, but I think it would also have taken away from the actual pain of losing the Ponds/Williams at the end of the episode. And not giving Brian closure gives the possibility of still seeing him in the future. But I appreciate that Arthur Darvill narrates the scene, making it so much more poignant.
I teared up. I had to stop watching halfway through to keep myself from actually crying. I need to hug Brian!