The loss of Saber is a big point for the story, sure, but thematically? It does not change much. Shirou STILL wants to play the superhero in the HGW. Zouken is still a big mystery. Sakura is still not involved in the story. Also, Rin visit at the Matou house is completely unconnected. Rider reappearing aiding Shirou is unexplained. Shinji is still believed to be Rider's Master. Day 9 is a good ending point because is a BIG climax and a turning point for the whole story, just like Sakura going crazy and abdupting Illya is a big turning point later.
I waited 7 years for this adaptation, I couldn't care less if a couple of things are summarized or cut.