Both of the things you have a problem with were explained at the end, when they basically said the virus was easy to program and change its target (who to attack)... Cadmus would never try to wipe out humans, so that obviously was built in right from the beginning, and Eliza modified it to attack only the White Martian subspecies of alien.
Sure, that's easy enough to deduce, but it was an odd omission from the expository dialogue earlier. I mean, the characters were all going "Oh, so that's why it kills all aliens except Kryptonians," but nobody seemed to be thinking "Wait a minute, humans would be aliens from Zor-El's point of view, so what's the explanation for that?" The problem was that the characters just seemed to take it for granted that humans were excluded from the category of "alien," even though a Kryptonian would not see it that way.
It seems much like a virus used on Fringe a few years back, by an immortal Nazi who was programming it to attack certain specific types of people.
Which is an idea that has a basis in reality, the concept of tailoring diseases or medicines to target specific DNA sequences. Although this was the reverse, a disease that only
spared specific species.
I can understand the frustration that this episode wasn't really part of the crossover despite being billed as this big four night event
Which, by the way, is also clear from the episode titles. This episode was "Medusa," while the other three parts are all titled "Invasion!"
, but as someone who doesn't watch Arrow or Legends and was fearful that this crossover would ignore various storylines happening so far, that aspect didn't bother me at all.
Yup. The thing to keep in mind about a crossover is that its individual parts still need to serve their respective series and their ongoing arcs first and foremost. So the
Flash installment is going to be mostly about Team Flash, the
Arrow installment is going to be mostly about Oliver and his team, etc. It's easier to interlace those three casts within that parameter because they're already so closely linked -- Barry debuted on
Arrow, characters from the two shows have crossed over repeatedly, most of the Legends are characters who originated on the other two shows, and Oliver has appeared on LoT a couple of times while Barry's future self has been a recurring plot point this season. But the only Earth-1 character who's been on
Supergirl before is Barry, so having "Medusa" be more heavily tied into the crossover would've been more of a distraction from the show's own continuity than it is for the other three shows. That's why this structure makes sense narratively and logistically, regardless of what the advertising implied.
Also, did the real Hank escape because I thought he was killed by J'onn. Must if missed that one little part.
They did the thing where they looked over to where he'd been a moment before and went "He's gone!" Which has got to be the single most overused plot beat on the DC-CW shows this season (the most egregious example being Magenta instantly disappearing after the Flash was distracted for literally less than two seconds).
Also loved the scene with J'onn and Kara on the Balcony, even though it reminded me a little of how much I'm missing Cat Grant (Is she going to return this season?)
To borrow a nickname from Tor.com's reviewer, the DEO now has its own Balcony of Feelings!
As for Cat, I think she's expected to be back, but I wish she were around more often. I feel the show has lost some of its thoughtfulness without her around to muse philosophically.
I know Flockhart doesn't like to leave her family, but couldn't they, like, have her call up Kara or James on Skype, and film her scenes in LA? I mean, we had a whole season where Clark Kent only showed up via text messages.
Yeah, I thought that too. The Medusa virus would seem to be the perfect weapon against the Dominators. But I get the feeling that Supergirl would not approve considering how distraught she seemed to be that her father was the one who created the virus.
The idea of the good guys using a biological weapon rubs me the wrong way. There's a reason the use of such weapons is considered a war crime. I hated it back in the '80s when
V: The Final Battle resolved its alien invasion that way.
Besides, what if there are other aliens living in hiding on Earth-1 that we don't know about? And what effect might it have on Hawkman and Hawkgirl, who are kinda sorta part-Thanagarian maybe?