Gems instead of cards
Midweek Magic/Jump In... Instead of getting rare cards on my first two wins, I am getting only a few gems. It's annoying because my collection is far from complete and gems are only a little help to buy a replacement card. My experience seems to be that I am getting these annoying little gems far too often for a casual player.
When you win a small prize in an event such as a random rare card, then you should get a random rare card that you don't own. There is not one card in this game that has value outside of the collection and/or deck to which it belongs. For events, I don't see why we can't have a guaranteed rare/mythic card prize.
I know Wizards of the Coast is entrenched in their policy but from the player's perspective, it really lacks the spirit of collecting a new and sometimes exciting card.