Finished it earlier. It's not their next Stranger Things, that's for sure -- but the good far outweighs the bad for me. Highlights were the score, Will + Robot (good acting, good effects, good character arc), the new interpretation of Dr.Smith. A lot of the supporting cast is very lacking, but the core family is mostly good and you care about what happens to them. Don West was a big improvement over the '98 film version, he's a lot more comedic and doesn't just feel like a younger version of the father character.
Low points is some of the science isn't as convincing or smart as it should be, but honestly in a show like this it's not going to be something that weighs on my mind as much as the character and adventure aspects, which are pretty good.
I think I'd rank it closer to shows like Dark or Ozark on the Netflix quality scale. Solidly within the B+ range.
Hoping for a Season 2. I'd like them to work on the "wow" factor -- this is a strange new world and we want to see stuff that feels really cool or clever. There's some of that here, but it's pushed way to the back burner.