Plus, lots of decks actually abuse them, by tapping a Howling Mine to turn it off, using a card like Fate Unraveler
This card gains ATK equal to the difference, until the End Phase), and possibly change their secondary effects to "Once per turn" otherwise you have card's like Loreli and Melody who can use their effect's multiple times with no negative repercussions
Since the Orb is now tapped, its oppressive effect doesnt apply to you, and all your permanents untap as normal
*Set content are subject to change
Since you have the flexibility of choosing which cards you think will be best for your deck, in a way, your total pool of cards is much larger in a draft than it is in Sealed Deck
In my mind, theres one big miss in the execution of Alchemy: the price