The former is a value piece, while the latter feels like it needs the right shell, such as Mairsil, the Pretender
(A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay
2017-03-14 If you somehow manage to cast Explore when it's not your turn, you'll draw a card when it resolves, but you won't be able to play a land that turn.
All this is to say, while people with big Reserved List collections will lose some value if the foil loophole is reinstated on the Gaea's Cradles and Gilded Drakes of the world, the impact is likely overblown, as the most expensive cards on the Reserved List are expensive because they are extremely rare and collectible, not because they haven't been reprinted
Similarly, while it's unlikely we'll "unbuff" cards that received balance adjustments to improve playability (and currently have no plans to do so), only a certain type of dark-empowered entity deals in absolutes, and we're not them