So, one random dev detail:
Currently, in endless mode, the game scoops up the cards, then deals out a new circle, THEN shows you the card (even though they have just been dealt).
Its a minor detail, but I feel like it would flow more naturally if you scooped up the cards, then showed players the upcoming hand, then dealt the new hand out.
EDIT: Also, when scooping cards in and out, should the numbers scoop with?