I am in the ""less Sheldon" camp for this show as I think this works far better as a family comedy than an origin story comedy. That being said, this episode showed how they can make it Sheldon-centric without it falling into the trap of being annoying. They focused on one aspect of his personality, but treated it lightly and didn't try to explain it, and let him just be a kid. Still, though, more Missy would have been nice.
I have very conflicted feelings about Meemaw and her almost fight with Coach. On the one hand, she was right--he was being mean to John and, on a general level, that was a turn off. However, Connie tends to be like that with everyone so I can't really fault Coach for thinking that jokes like that would have been okay with her. I mean, Connie isn't exactly a nice person. On the other hand, I did like that she stood up for John, but it just didn't feel very true to character with her. I can see her shutting down the conversation with Coach, but going out of her way to defend John, even if it was an accurate display of her feelings on the matter, didn't seem in character. So I didn't like it, but also liked it, whatever. I still laughed when she told Coach she was going to have to, what was it?, reprimand him?