It would be great to be able to search sets by code. It's hard to identify some sets by the symbol. Use case I have to identify a card from some random product with an obscure symbol: searching with the code 'DDT' should point me to 'Duel Decks > Duels Decks: Elves vs. Inventors'
To see this working, head to your live site.
This can be done on the checklist page where you can sort by set code