There’s existing feature suggestions discussing exactly such an option for entire libraries, on-deck episodes or individual playlists.
From your post, the one for shuffling shows in a playlist in sequence seems to be the one that’s covering what you’re suggesting in this thread.
I suggest you comment/vote in that thread in order to avoid distracting/dispersing votes and attention for those suggestions.
Side note: my apologies if you perceive this as shooting down all of your suggestions – that’s not my intention. We’re trying to avoid swamping the suggestion forum with duplicates where none gets critical visibility on its own. Therefore, please search for existing suggestions before posting duplicates. Thank you!!