Ally, agree on the centerline hazards, at least I use one on nearly every course where I can find a good spot. So do most others, so it falls in the "rediscovered" category, like pot bunkers in 1980 after ASGCA went to Scotland for the first time.
That said, I get the impression that at least a few posters here believe center bunkers were a staple of the Golden Age, and I don't see it. I see angled bunkers, a la the bottle hole. I would characterize the "standard" tee shot of golden age archies to be the optional carry over angled fw bunkers (if there was a standard) and would characterize most of the post WWII era with "LZ flanking bunkers (a la Wilson and RTJ, with Wilson doing more staggering, and Jones doing more US Open style bracketing)