Avengers Disassembled should see at least some sideboard play
(Whenever a creature with melee attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) If Depthshaker Titan's first ability causes a Vehicle to become an artifact creature, it doesn't count as "crewing" that Vehicle for any ability that would trigger due to a Vehicle becoming crewed
But draw, removal and recursion differ from ramp in that you just need to see them in order to benefit, and they rarely matter in the developing stages of the game
Like most Magic: The Gathering cards, the value of Leonardo da Vinci depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Assassin's Creed)
And that just makes sense, given the importance of iconic weaponry within the franchise