In terms of the Sagas itself I liked the return of real sets - acting and reacting in a real environment or sets (or as close as). On my 1st viewing Maz and Snoke jumped out to me - they seemed somewhat fake, yet it wasn’t that the CGi was bad, it was that they were CGI characters in a ‘real’ film. On the 2nd and other viewings they didn’t jump out as much, and to be honest Maz has grown on me and Snoke does have that menace and intrigue about him.

It is probably because of the Prequel sets, the CGI characters in them, the stageiness/falseness of the PT sets, that ‘bad’ feeling about the Prequels, that they possibly jarred with me (and possibly others too?)

I also think they’ve nailed the characters - you actually identify with them, care about them, what is happening to them, what will happen to them in the coming films. I’ve not felt that about a Star Wars film in a long, long time… the filmmakers and the crew all did a great job.