sorry to dissect your post but I want to make a few comments while making it easy to know what I'm referring to
Legion never says another word about DD;
That was part of the code though. They cannot influence the past. Don't touch, don't say. Its when persuader influenced the past that they had to fix it.
they blithely return to the future with Balliac and leave Clark on his own with DD (if they even remember that there is a DD) and the darkened FoS (which you'd think they would have graced with their presence while they were in town, given their fanboy rankings).
they weren't in town for the Superman memory tour. They had a job to do and do it as hands off as possible. Its clear cosmic boy knows about Doomsday but he can't interfere. history has to play out. Not only are these time travel rules they are basic sci-fi rules.'you step on a butterfly...'
They all just left him in the FoS with not a look back. Left him encased in Brainiac's crystal cocoon.
No one knew he was there except chloe and she must not remember.
Someone mentioned using the Legion ring to send DD to the future. Can the future deal with DD, or would he just learn new ways to not die a second time?
Sure the future can. Mon-El and Ultra Boy of the legion are superman's equal. Actually Mon-El is considered mightier because he has no weakness to kryptonite. Then you add the entire legion on top of that and you have a pretty resounding victory.
The baseball:
How would the Legion have heard about the baseball if it wasn't in their museum?
A diary from later in superman's life where he refers to it. Someone else writing about Superman's life when he sees fit for his secret to be revealed?
Now that it has "CK" burned into it with heat vision, it *can't* be shown to anyone in active Superman's time or it would likely give away his secret.
Wouldn't taking the baseball to the future - past the time when it wasn't in the museum - mess with the timestream somehow? It just seems like it should, unless Garth is planning to put it in the museum. Fanboy that he is, I imagine he'll instead be sleeping with it under his pillow.
Not at all. Garth said that the ball was missing, it was missing because he gave it to Garth to take back to the 31st century in the 21st century so the time loop is complete.
Too much Lana-love, especially from the future.
this ties in with lack of lois but this was a Superboy story in essence. there were no characters here that in the comics superman meets later. In smallville's own continuity Geoff was able to stay truthful and do a Smallville episode in a show that is becoming Metropolis. Legion should have been done 5 years ago at least but he really works with what he has right now as far as characters go. I think the Lana love is a part of that. Lana is going in 3 episodes and this episode is an appreciation letter for her character. Now I don't like Kreuk's Lana but there is no doubt the character help shaped clark. Also as a comic writer I got the distinct impression Geoff was writing about the red head he usually writes about more that Kristen's portrayal.
This one might have been an oversight on my part, but - the busted crystal that could have gotten Brainiac out of Chloe w/o killing her - how did Clark get that again? Was that the messed-up one that took him to the Phantom Zone?
It was the Martian's crystal I think. In the recap they showed Kara using it on Faora.
I wasn't crazy about the cheese in this episode, although there were excellent bits.
What was cheesy again? when I think cheese I think really tired cliches and other than the rules of time travel that have been used in every other sci fi show ever I can't put my finger on it. As for obscure, I don't think it should really matter. Who cares if people aren't aquainted with Legion. this was their opportunity to get aquainted. Non-comic fans would be surprised how influential the Legion is in superman lore.
See them in the time bubble at the top with the main superman cast of the silver age? This is what Geoff Johns is trying to restore in the comics, minus the superhorse, supermonkey and the mermaid
To me the non comic reader sees the reeve movies as 'canon'. that is the myth for them but when you pick up the comic its really so much bigger and better than we have seen on screen. Smallville's best quality is that it gives people a glimpse of that.
The forming of Balliac. Though I initially wondered why they didn't immediately destroy it (with Clark using his heat vision), I figured maybe they'd try to extract all of Brainiac's accumulated knowledge from it using their future tech.
Balliac is this guy
http://www.majorspoilers.com/archives/1907.htm/
Legion Scientist