Captain Marvel always has this feeling of even more goofy boy scout than Superman. lol
Geoff's take was not like that though, actually quite the opposite, he was such a goofy brat,a handful and film seems heavly influanced with Geoff's take rather then silver age or anything ( and i have to admit, i only read Geoff's take) I don't know how he was back then as well, but there is a new DC Shazam deluxe collection on the way with Captain Marvel and i will definetly get it.
Especially to see how was Black Adam, 'cause i'm a big Black Adam fan.