In the end, the deckbuilding process didnt necessarily lead to breaking Soul Diviner (even though I like the first decklist quite a bit), but it did bring me to a final product that Im very happy with.
Mishra's Workshop-based decks are one such example
Since this set is such a big deal, we (Chief, Forcing White in CMM Sealed and Exxaxl, Casting Demonic Tutor to Find a Basic Island) are going to double our usual list to a full 20 cards
These are the best Sacrifice outlets in Magic: The Gathering: 1
It also strips out many lands from your deck, and over a few turns, it dramatically reduces your chances of drawing a land, thus increasing card quality from the rest of your deck
So its natural that card draw is considered one of the most important aspects of any deck and in my humble opinion the most important of all