So from when I was a kid, I had a full set of Star Wars graphics novels (man do I wish I still had those!) and there were 9 stories that made up the full series. At that time I didn't understand that seeing episode IV wasn't the start of the full series, as reading my novels, there was all this story that was happening before A New Hope. It wasn't until I got older and understood the first movie started mid story. Seeing episode VIIII as the end of the main Star Wars story follows what I remember as a kid. The spin off stories have been fun to watch and Disney is likely to milk those but ending the main story is how it was supposed to be.