There has been a focus on catering here, which I think isn't going to be provided again, but if it were, it doesn't need to be by SWR. Many nationalised railways use contractors for catering. And I'm not holding my breath for other improvements yet either, it just isn't a simple matter to change most things quickly. Removing the pointless operator name from announcements would be a simple start.
Something could be done for the December timetable change although of course the shortage of trains isn't easily fixed within that period. It would be good to be told that evening services, which are often very busy, would go back to the frequency they had before, "nobody travelling" is now a fiction. It's good to see the increased cleaning this week, but I have yet to see a ticket check and that's understandable on a full train.