If a preconstructed deck contained four copies of Outlaws of Thunder Junction 's Blooming Marsh and you only had copies from Kaladesh Remastered , you wouldn't get a discount
Emerald cards like the Mad Hatter Gracious Host Quest for three lore and need to be dealt with but if your opponent Challenges him, you get to draw a card
BEAR UMBRA Seedborn Muse is a removal magnet, and it hogs the chess clock
Draft Boosters Though Play Boosters simplify the purchasing experience, making one pack suitable for players looking for a fun, casual pack opening experience as well as being able to play games of Draft format MTG, previously youd need Draft Boosters to play Draft games
Something along the line of a scannable code on cards to verify authenticity would get the job done, but implementing the program would be costly, and it wouldn't help with all the cards that are currently in print (barring some sort of mass-exchange program, which would be even more prohibitively expensive)