(no real spoilers particularly)
Well, I've seen episode 1. I had expected them to deviate massively from the original 1950s novels. Mainly because they had to. Asimov's books were all about Big Ideas, and not about characters. The books featured a parade of cardboard cutouts with goofy names, all male and presumed white, pontificating about said Ideas. The early books also seemed oddly small in scope - it was just a rotating cast of guys sitting around rooms talking, supposedly against this mighty backdrop of space and time and power. They were, after all, originally serialized short stories.
You couldn't make that stuff into an interesting TV show. Maybe a really long stage play that lasted weeks or something, or certainly a radio play, but let's be real.
So for TV, they had to focus on character. And grand visuals. And my goodness the visuals were sumptuous! It's fun how the framing and composition for TV is like cinema these days - they can put tiny details in a frame, in the knowledge that so many people are watching on big high-rez TVs.
Anyway. Episode I wasn't bad. It looked great, and was entertaining. Acting was decent, and mostly a cast of unknowns and character actors, which was wise. Just as wisely they had a reasonable spread of male and female characters and accents and skin tones, which obviously makes sense. Like the Expanse writ large, this is supposed to be the future of all humanity out in the galaxy. Effects, cinematography, set design, and costuming were all big-budget and excellent.
So it's naturally "inspired by Foundation" rather than the books themselves on-screen. Don't go in expecting a 1:1 correspondence of events.
Anyway. I'm definitely going to see where they go with it.