I could see Cubes being the best way to encourage limited play at stores. Have a pre-set stack of cards that you shuffle and build "boosters" from those shuffled cards randomly and then play from that, with no one owning the cards, but everyone getting tournament credit or some sort of rewards to their wallet based on placing.
Chris better know as PlagueScape on some gaming channels. Im the Philly area. Lets see card game history... started Magic: the Gathering in 1998 during the Stronghold expansion got hooked on the idea of card games in general after. Beta tested over half a dozen TCG/CCG's. Competed in GP/PPTQ level tournament with good enough records to meet and play against some of the worlds best players. Collected enough profit from them to pay for 2 cars. I've competed in Pokemon, YuGiOh, Magic: the Gathering, World of Warcraft TCG, DragoBorne, LightSeekers, Force of Will, Warhammer CCG, and Hearthstone tournaments. I've became State and Nationally ranked in some. Regardless I'm still more unlucky then any of you on the draw, as I prove time and time again when I stream Magic on twitch and draw 7 lands of the top to a GG.
out side of the CCG's hobby wise i do photography, PC games, table top games and the stuff that goes along with the tabletops (painting, 3D printing, ect).
would say the draw to volition comes from the no mana screw/flood that ive noticed in this game you can always do something and also the YOU own the cards a issue I hold with with MTGA and MTGO the cards can be taken away at any point and they have "no value" after spending real world money on them.
I would love to see some of you and the people you are demoing to and playtesting with, come up with some decks using the whole available card pool.
The easiest way to do this is to make sure you sleeve all the cards in the same sleeves, then you can just mix and match to your hearts desire. Maybe even print a could duplicates of cards you know would be in multiple builds.