Though that was less to promote J'onn and Ollie, and more because DC editorial was a set of feudal baronies and the Superman and Batman editors were stingy with the Big Two.

Though Superman lost that fight, and had to be bailed out by Lex Luthor.

Peter worrying about Aunt May finding out may or may not be interesting. Peter being forced to do something clever and interesting to avoid it is more likely to be. The point (ideally) isn't angst, it's to spark a greater variety of action than putting on a leotard and punching the problem every once in a while.

And maybe they can do it without immediately undercutting it in the next moment.

No, the Leader!

For what it's worth, I'm pretty sure that Wonder Woman has always been a step ahead of Wonder Girl (even after the latter changed her name to Troia and was no longer a teen). Ditto Batman with respect to Nightwing. It's pretty standard for the main hero to be the better of the pair, even when gender isn't an issue…

In the original Silver Age story, it was done in one. But Maggin explored it at novel length in Superman: Last Son of Krypton, and even resolved it finally in the short story "Luthor's Gift" (set in the future, after Lois's death somewhere past her hundredth birthday).

compared to Clark who's powers took up to his adolescence to develop.

Though they could also have him show up years later by his time frame and already involved with Shadow Lass. (Thus leaving an opening for Kara to discover sparks with a certain green-skinned supergenius.)

I was sort of reminded of the scenes over at Marvel where the Watcher shows up to confirm that Squirrel Girl definitely defeated actual Doctor Doom, who was absolutely not a Doombot or a clone or anything.

No (more) killing Jimmy! If they can't figure out a way to use his character, send him back to Metropolis, have him go off to play war correspondent, have him disappear mysteriously via Boom Tube or get shrunk into Kandor to come into his own as Flamebird. There's no reason to kill the character.

Though Lex and Clark being childhood friends is Silver Age canon, explored further in the Bronze Age (particularly by Elliot S. Maggin). Smallville did a nice job of adapting that central tragedy (at least in the early seasons that I watched), but they were building on a long history.

Less. But it's sort of a recurring hazard of team-ups involving a character that can do anything to slip over from "everyone has a crucial part to play" to "Superman sure has a lot of skill gaps, blind spots, and tendencies to get sucker-punched with kryptonite or magic."

I'm not sure why they can't completely ignore them if they want. Secret identities haven't been obligatory for superheroes for decades. The Fantastic Four never had them, more than half the Justice League didn't have them after the mid-1980s, etc. I like the trope myself, but I don't really see the point of doing…

I'd be happier if they dumped it for everyone except Supergirl. Barry and Ollie don't act very different in and out of costume, so there's no great loss if it's not a device the writers are interested in. (And while Barry traditionally had a secret ID, the Flash had a public ID for more than two decades in the…

I'd forgotten. But that just redoubles my last question.

The dose makes the poison. Especially with comic book science, there's no reason to think that the threshold for lead affecting Daxamites isn't well below that for showing biological effects in humans.

I figured she set the course for the Phantom Zone. (Which in the show is a region of space where time doesn't pass, so an obvious place to put a dying Daxamite as a stopgap even if that weren't part of Mon-El's story since the 50s.). I was surprised that wasn't made explicit.

Who, of course, is also very smart, so I suppose Lillian and Lex (and of course Lena) also know Supergirl and Superman's secret identities. And Snapper may be a jerk but he's also a skilled investigative reporter, so…

The funny thing is that it's not actually Silver Age. There was a "silver kryptonite" story in the Silver Age, but there it was a hoax in-story. As far as I know, this version of Silver K comes from the "Smallville" TV series.