I asked an AI for video ideas, and they were good
youtube.com
youtube.com
What seemed implausible in the 90s was the amount of 3D modeling that would be required. But now you can imagine a GAN that can generate 3D character animations from thin air, like StyleGAN does currently for faces. And another neural net that generates the narrative, and so on.
Nets within nets within nets.
Edit: 1: Actually, I’m reminded of something my college computer graphics professor used to say: good SciFi doesn’t have to seem possible — it just has to seem plausible. By that measure — Star Trek was good sciFi IMO — it would be more correct to say that it didn’t seem possible, or even probable, but it probably did seem plausible.
No, what seemed implausible in the 1990s was:
* projection holography
* materialization
* kinetic feedback to fake moving through larger spaces
The 3D modelling was just “more computing power” and we hadn't even started bumping up hard against limits on Moore's law at the time, so that seemed easy.
1: possible, not plausible (see my edit above)