Interesting. I used to commute between Reading and London, and had been wondering if the Elizabeth line might have made things easier then; after all, not having to change at Paddington would be nice. But I see that it's 50 minutes vs 25-30 for the fast trains, and even the worst interchange is faster than the 20m loss. Maybe more worthwhile for people further down the route? Even Twyford or Maidenhead to Liverpool Street, for example, sound like they might be quicker.