The trend of making 4K releases retailer exclusive is worrying to me.
As for the movie, I wanted to see it (even though it's been a long time since I've seen the show) but I just didn't get around to it. I haven't had time to see anything since Dr. Strange 2.
It's not new. I remember getting super frustrated because I was interrupted watching Men in Black on blu ray multiple times and kept having to start over from the chapters menu. It's always a frustration.
To be fair, only a handful of scenes take place anywhere besides the house's drawing room, so that probably helped a lot. If it were made today, there would definitely be a lot more locations and we'd absolutely be shown the basement. It's a testament to Capra that he keeps everything visually...