It would be awesome to choose a pvp opponent by number of cards in deck. I like to play with a 60 or 50+ deck as to bring some randomness into the game, which IMO is what makes it fun in the first place. I would love to play either only 60 card decks or maybe 50+ card decks versus lame, boring, mundane and uneventful 30 card decks.
I also think that the Reverse time card is slightly overpowered. It essentially removes an opponents monster from the field and forces them to draw that card the next turn. A more balanced solution might be to return the card to a random place in the deck or maybe as the third card next in the deck.
I have only been playing about a month but this game is an awesome time waster. The above two issues are really my only current qualms about the game.
