A first pass at a script with the requested topics covered; may or may not be doable in under a minute but should be shy of 90 seconds. Not really aimed at people who've never heard of cryo before - couldn't fit that in with the rest of it. I could do more of these covering different subtopics/different audiences if that would be worthwhile.

[Scene: An office of some sort. Two women in business casual wear are talking.]

NADIA: So, how do you hold up with the ice crystals in your body? [cut to a cartoon of cells methodically sliced up by a diamond-shaped crystal expanding.] Voiceover: Won't they do damage, even if everything else works?

JOICE: Well, they're not going to drop me in a vat without some prep work. They have chemicals called cryoprotectants [fluid pours into the cartoon, wearing the crystal into a harmless little ball] that reduce the ice crystals. It's almost like what goes in ice cream [closeup of cartoon ice cream cone] to keep it smooth.

NADIA: Ice cream. [Zoom out from ice cream to show cartoon Nadia holding it, and looking at it skeptically.]

[Cut back to office scene.

JOICE: You know what I mean.

NADIA: Sure. But I looked at that website, and it costs thousands of dollars [cut to cartoon Benjamins piling up] to get preserved. Where'd you get that kind of money? [cartoon vignette of Joice wearing a ski mask holding a bag marked $ and posing evilly.]

JOICE: I didn't get that kind of money. [Ski mask and bag of $ disappear; cartoon Joice is wearing her normal clothes and shaking hands with a dude in a suit, who then departs.] Life insurance pays out when you're legally done for, [cartoon Joice keels over; cartoon doctor and cartoon lawyer with a briefcase appear on the scene and gesture energetically] but not too late for cryonics to step in [team of cryo folk troop in and carry cartoon Joice off in a stretcher]. I have my insurance set up to pay the cryonics organization. [Dude in suit shakes hands with one of the cryo folks] It costs me less than my phone plan! [Scale, with a phone weighing more than a snowflake]

NADIA: Not nothing, though. [Phone is replaced with a feather, scale tips] You'll feel silly if astronomers find, say, an asteroid on its way to destroy civilization. [Cut to asteroid, on its way to destroy civilization. Asteroid cackles evilly. Cartoon Joice smacks herself in the forehead.]

JOICE: I'd feel sillier about buying a house [zoom out from cartoon Joice with her hand on her forehead to show a house], if that happened. But in the real world, [asteroid goes poof] I need a house to live in [Joice in her house, smiling] - and cryonics to have the best shot at living.

Any specs for who the characters should be or what characteristics they should exhibit via dialogue beyond pro-cryo/not-yet-pro-cryo?

Edit: In particular, to what extent should I be leaning on storyish tropes? e.g. "Remember that time when [allegorical event] happened? You did [sensible thing] which is analogous to cryo!" I know fiction writing, but I'm not versed in the ways of marketing...