Of late though - I don't know if it's the influence of Scandi Noir - there's been a tendency to let the arc dominate to the extent that each episode has no standalone narrative whatsoever. They just become chunks of a vast film. And I honestly think that, in many cases, this has been a negative step. Two good examples are Suits and Star Trek. The early seasons of Suits had great single episode storylines, but the last few entirely failed in this respect. And though there were some good things about the Netflix Star Trek reboot Discovery (especially the very final scene), again I pined for the single, occasionally double, episode approach of the classic series. As for the X-Files reboot, I've given up on it, so depressing is its unrelenting arc. (Also it's rubbish.)
Please, show runners, don't lose the power of the single episode narrative. An arc should support and enhance, not dominate. It's fine for single thread dramas like House of Cards. But the more open structures of the likes of Suits and Star Trek have the opportunity to do something more interesting. Don't give it up.