Urza, Lord High Artificer made his debut in the Modern Horizons set as a defensive blue creature who can populate the board state and tap for extra blue mana to start with
Counterspells also help to make sure no board wipes resolve , as otherwise it'll be an uphill battle for you.
The differences between the two types of cards in this regard are small but noticeable in person, mainly due to the card stock and thickness
While you can tune engines to draw extra cards and control the game, some tactics are simply more consistent (bunnies can easily overwhelm an opponent, for example, thanks in part to the new Offspring mechanic)
March of the Machine Base Set Creatures March of the Machine Base Set Creatures I would frequently find myself hoping to open a gigantic, rare/mythic creature in each booster
It's hard to put much weight in the value of the new cards during spoiler season, and this is doubly true for this release since it's the first time a Universes Beyond Commander release will also have booster packs alongside the decks