First the good news: the plot simultaneously retains elements and characters of the original show, while changing enough things to make the story fresh. I give the changes 10 out of 10 for creativity, suspense, story depth, and being done in a way that hard core fans of the original TV show, like me, don't feel like we had the rug yanked out from under us. The new robot is wicked cool. He has the powerful, protective elements of Gort (The day the earth stood still) and mystery, terseness, and is-he-good-or-evil of Kosh (Babylon 5).

Flashbacks are effectively used to give background on the characters and story line.

However.......

The snarky, emotionally dysfunctional characters are painful to watch as they bicker, insult each other, disobey, and lack any of the chemistry, teamwork, and friendship of crews on Star Trek, Lost in Space (original), Firefly/Serenity, Babylon 5, Battlestar Galactica (new version), or Galaxy Quest.

Just about every character except Will exhibits passive-aggressive behaviour.

The Will Robinson character demonstrates glimpses of genius that feel incompatible with his insecure, deer-in-the-headlights persona. I see none of Billy Mumy's Will Robinson here.