Smuggler's Copter is the most dominant card (by percentage of decks that play it), and while it's featured in both of the big decks, it's also propping up a bunch of second-tier decks like Mardu / RW Vehicles and Bx Zombies, so getting rid of the looter scooter might actually make the format less diverse, as odd as that sounds
It plays very well in the 99 of dragon and infect builds
Secret Rare versions (#187, #188) command 2-3x the value of their Special Illustration Rare counterparts
Your Cards All right, enough about their cards
Smothering Tithe and Knight of the White Orchid (among others) are spells that can help a white deck ramp up its mana development and gain an advantage over your opponents, or just play the catch-up game in terms of resources
These are the folks who are wealthy enough to not have to worry about the value of their Magic collection