The series is basically "unexpected bad thing happens, and when trying to fix it, more bad things happen, until a Robinson miraculously comes up with an ingenious soltuion and saves the day."

Which in and of itself isn't a bad theme for an action/survival series, but two things in particular really make it hard to enjoy.

The first is the overbearing soundtrack. Loud and about 30 minutes per episode of relentless over-the-top, fast tempo, "omg this is the most suspenseful action sequence ever!!". Really unnecessary.

The second is the characterization of Dr. Smith. It's unbelievable that she'd be a drug-addicted loser on earth and then suddenly be the smartest, most conniving, evil villain who can mentally manipulate anyone, over and over, even when they know what she's done. It basically makes everyone else seem like complete idiots.

Remove or fix those two problems and it could be a great sci-fi adventure series.