Finished Ozark last night. Very good series, but I thought the Foundation, king-making aspect of it was poorly fleshed out or explained, as in why would they become the most powerful people in the universe because of this thing, and why were people falling over themselves to join the board and become doners? Felt like they said it was so, and it was so, just trust them.
Not spoiling the ending, but didn't feel like the ending of a series, but rather just a season. Or maybe even just an episode. Thought it was a bit weird.