I didn’t know if this was best suited in the comics, or TV forums. But here goes…
DC has seemed to have success with their “Batman '66” and “Wonder Woman '77” titles. Which got me to wondering, could DC successfully pull of the same format with comics based on the 50’s Superman or old Shazam Tv series.
Shazam! would probably be hard to do if they wanted to like the Superman and Batman books keep it in the spirit of the original TV series. Since that would mean no super villainsn, no serious stakes and no real danger for the hero. But the might be able to have him go to locations the budget of the show couldn’t do (I.E. have their supposed cross country trek take them places that didn’t look like the same part of California every time) or crossover with other properties of the time. Wonder Woman was not too far from it, or maybe crossovers with action shows of the time. The premise of Billy and Mentor traveling “The Highways and byways” would make it easy enough to insert them into anyplace they needed them to be for a crossover.
Superman I think they could do well. Not sure about crossovers since if like Batman and Wonder Woman they want it to be characters from the same era, not sure who they could use at least that would resonate at all with modern fans. But plenty of untapped story potential from the original series, which for something made in the 50’s doesn’t hold up near as bad as most would expect it to.
Don’t know, probably neither have the same relevance to people today that Batman and Wonder Woman’s classic shows do. But thought it could be interesting for them to try.