I am not saying there should be radical shifts in the status quo each time a new creative team jumps on board. The basics are generally always the same, but give creators more wiggle room to play with different flavors and elements that might not necessarily jibe with whatever was done with the previous incarnation. Nothing too major, just the details.
Major stuff like the Kents being alive or dead is not something that should be flip-flopped over and over again though. They were dead for decades, then alive for a couple decades, then dead again for a decade. Let's give 'em another decade of being alive again before hitting that button again. Like I said, if someone really wants a dead Pa Kent to be a factor in their Superman, he could still remember that Pa died in one of his previous incarnations.
Krypton is far easier to deal with since they aren’t all that different from each other except for their look. The only real outlier is Byrne's Krypton, and even that can be used if any creator wanted to. Just explain that Jor-El and Lara went through a Goth stage in their youth and got really into Cyberpunk
Also, this doesn't necessitate retelling the origin over and over either, just any clarifications that are necessary for whatever current stories are being told. If the exact nature of Krypton's demise isn't relevant to the story, it doesn't need to be brought up.
All editorial has to do is establish clear benchmarks that they'd like creators to stick with while also being flexible if there's a good story reason for changing something big.
Superman can still exist in the larger DCU and remain consistent with whatever is happening in his monthly books, but everyone needs to be clear on what their gameplan is, which is what killed Morrison's New 52 revamp. They had no plan.