I decided against redoing the design of the telephone booths - the existing models were quite good enough for my layout. Even the ones where the individual flat faces were visible weren't that bad. And, thanks to 3d printing, I've also got around 15 telephone booths finished and painted when I only needed... oh, maybe two. So, no work on a better door, no improvements to hinges. But I've got finished models. One's already in at the far end of the Glenwood siding and looks great!
SP modelers, expect me to be handing out phone booths as party favors for the next couple months.