I can't help but wonder if you would have been better positioned better vs PO mentor and oath with 1-2 tseize md.
Do we really need LED? it feels win more a lot of the time, and only really shines on rare occasions. It increases variability quite a lot. Also Tinker bot should be in the main deck unless your meta has shops underrepresented. Tinker is also pretty good vs blue decks to clear a path for ywill or fetching a Defense grid.
Saddistic sacrament has always been a little loose in my opinion, since you are usually winning the game when you have a bomb with the same cmc resolving. The BBB forces you to invest heavily into it. It also has gotten a lot worse without probe and with decks like oath or mentor which have diversified their win cons.
How good has bontu's last reckonning been for you? It doesn't seem like it would be better than stuff like EE, Toxic deluge or even pack rat?
3/4 slots should be all you need vs dredge. Especially since most versions have traded speed for resiliency to hate, which makes them softer to Ritual storm in general.
Sphinx vs BSC is debatable although I feel like ravager makes lifelink in general a lot worse (as seen with the decline of Griselbrand in oath which it is partly responsible for). But Sphinx is definitely a house vs a deck like hatebears/humans.
Since you made room for preordains, was surprised not to see Top. It is a lot more versatile and helps when you are forced to play the longer game. Also better bait for missteps.
Curious to hear your thoughts on these matters.
EDIT: Where is Library? Card is ridiculously good in the deck.