@Neil.T I just rewatched the first episode and yes there's loads of things that don't appear after this. Chiyo-chan's song, male students talking and a different male teacher.
Maybe Azuma-san didn't like it either and that's why we're not getting Yotsuba&! I'm currently watching Somali and the Forest Spirit and Inori Minase's performance of Somali, an inquisitive small child reminds me so much of Yotsuba, that I've changed my mind on thinking it would be slightly grating to have her animated.
@ayase See I thought some of the timing was poor/weird. Like Osaka would say something and then the scene would linger and I'm like was that supposed to be funny? Maybe it's the dub, but no-one does anything after the line, so that would probably be the same in the original. Where as when reading you can do your own timing. You can linger on the build up or rush to the punchline. I've found a lot of Yotsuba&! hilarious even when I could guess the punchline. Maybe a 4-koma would be different, I've never actually read one.
Speaking of the dub, I liked a number of the performances, especially the 2 teachers and Tomo seemed a good fit, and Sakaki is naturally quiet so I don't think that would be any different. Chiyo-chan voice was probably the worst, English VAs just can't seem to be able to do young children's voices, they just come off as squeaky and annoying. Thank God most of the VAs who did children in the Ghibli films were children themselves like the Fanning girls in Totoro.
@WMD I have another one if you need it, and get a new one every month. I think plenty of people have some floating around as well.