It would be good to replicate it, just to put down some of the naysayers that quibble over a point or two saying it was staged or influenced.
And, to gain more knowledge about the causes and effects. We have more information today, and more data gathering. Would be good to do this study again in a modern lab.
Though not sure this type of experiment would be allowed today. Thus the problem. Some of the more well known studies that had a big impact on our way of thinking, aren't even allowed to be done today.