I guess River can't see Capaldi's Doctor again since she didn't know him until just before her death
but yeah I'm just happy we got to see her again after her ghost appearance in Series 7. They keep breaking my heart with her character
Alex Kingston appearing from 2008 - 2015 kinda makes her the longest serving actress on the show
until they bring back Matt or David for another special
I'm not sure I'd be super excited for a Paternoster spinoff but I'd probably watch it. Wasn't there going to be a spinoff about the kids at Clara's school?