But I get what you're trying to say; there are a ton of unanswered questions that exist right now thanks to BIRTHRIGHT's new origins and the Loeb stuff. Hopefully, the new Crisis will organize this in a way that makes sense.
That's the gist of it. And I think you're right about the Crisis clearing things up.
Interesting point about Krypto. It may be possible that the dog is a "Pre-Crisis" survivor that's forgotten the Pre-Crisis universe, like Power Girl has. It ought to be pointed out that never, at any point, did Krypto the Super-Dog die on camera. He was just...forgotten, as the new writers took over.
Right. Krypto only died in an "imaginary story" (aren't they all?), not in the main, pre-Crisis continuity. It's reasonable to assume that if an Earth-2 character could survive being retconned, then so could an Earth-1 character.
But I must admit that my main concern is over Brainiac and Kandor. Brainiac probably got the worst revamping of all the Superman rogues. He went from an android that could threaten the universe to a possessed mentalist. Not a very good change. That being said, I've enjoyed his recent appearances and his new body. I just wish he had a better origin.
Kandor needs to be connected to Krypton in some way (and not as an alien ghetto). The other aliens are fine, but the city needs some humanoid Kryptonians (or mixed breed Kryptonians) as well. I don't think it was an accident that the citizens remember Brainiac shrinking them. But if he did, then he needs a new origin.