Interesting creative decision to place it after only the first movie. Granted, that means they don't have to deal with the Amnesia Kiss, the revenge fight in the restaurant and so on. They can't really do anything with the relationship with Lois unless they just use the first movie as a basis and then deviate from the movies. But maybe what they want is to create a Silver Age situation where the situation never changes.

I wish they could have done Superman '55 (George Reeves) but I like this idea. Looks like there won't be crossovers. If there are, it will hopefully be with Wonder Woman '77 and even Batman '66.