At the very least, Zero Hour and Infinite Crisis would apply to everyone stat-wise due to the history being retconned and feats do get more impressive in the first place. At the time of Hunter/Prey etc he was still stable but it was only during the parasite storyline when he was bulking up due to excess radiation so he just shaved off what he couldn't control but was still stronger and more powerful than he was pre-death. Also, fact is, Superman was weaker at the beginning reality cannot be denied everyone was weaker even Green Lanterns, they at best peaked at planet level And this stood for a while and this would apply for characters like Dominus too, should he get a profile Dominus wouldn't be High 4-C to 4-B just because Superman at the end of Post Crisis is 4-B Some one-off characters never came close to end of Post-Crisis Superman's power level Cythonnia is likely only 4-C to high 4-C tops just if we assume she scales to Rao, otherwise she again was fighting a much weaker Superman who at the time had no stellar feats. That's where the crux of this comes in Characters who would be added who aren't 4-B will be given 4-B just because. When it makes no sense And without a metric to properly explain, users would be confused if a character like Dominus who is noted to physically match Superman is given 5-C or 5-B or whatever. Dominus is a character who has had enough stuff going on for him in his storyline to warrant a profile If we really need to use the Marvel Standards Around 7-B at the beginning of Post Crisis, up to High 4-C to 4-B by the end of Post Crisis (Grew in power over the course of Post Crisis through many power-ups and soft retcons) Simply put if we can note Superman and co were weaker and got stronger as the story went by, and we note for villains who'd be weaker than High 4-C/4-B as happening earlier, that is good enough for me.
I honestly want to be done with DC beyond the occasional debunking tier 3-1 feats; I am more focused on researching Warhammer 40k, Doctor Who, Xeelee Sequence, and Halo. So I won't bother further debating on the matter as much as I could, and even if I conceded DaRoS and the training before OWaW, Zero Hour and Infinite Crisis still affected all characters' histories and retconned stuff such that they achieved more impressive feats earlier and in general made their outlooks and feats more impressive going forward. I can even explain the case of Fourth World Characters: they are on emanations of God Sphere places that are just as susceptible to crises and cosmic events as the main universe (See how Highfather feared the events of Zero Hour, how Darkseid sought it to get involved in the Imperiex wars, and how other Apokolipses were created for the other 52 universes after the Infinite Crisis). However, I digress and just ask if this could be possible; unlike Marvel which just goes on and on with inconsistent power scaling ad infinitum until someone finally decides to retcon the character potentially, DC has had a forward progression that changes the dynamic. If Zark's Marvel suggestion is used for DC, at the very least have it written like "Around 7-B at the beginning of Post Crisis, up to High 4-C to 4-B by the end of Post Crisis (Grew in power over the course of Post Crisis through many power-ups and soft retcons. Has had x feats at the beginning, but is capable of y feats by the end)" for characters. Furthermore, one-off characters should scale to the feats available at the time. Dominus (Ignoring his reality-warping hax), for example, should not be 4-B just because Post Crisis Superman was 4-B by the end of Post Crisis. He should be relative to the feats of Superman and co at the time, which was about planetary. That should be kept in mind if characters such as Dominus come in. That's all I want to say. Just don't deny they were concertedly weaker at first.
