Pretty addictive loop, could definitely see it expanded with added characters, levels, etc. It does feel like the game idea is pretty well-baked. The presentation is great - art, audio on score, damage, etc.
I do feel that the score range on cards to play being a finite resource feels like a bit of a stretch - I wouldn't really think of blackjack as being a game of finite resources (at best I'd think of money as being the finite resource, but the analogy for this game would be hp).
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Thank you, I am actually quite happy to continue it a bit to make it a real game.
For the limitation, I agree a bit. Our reference was "bag building / push your luck games".
You know all your resources, and you have limited used of them. I think when we added "shuffle to your deck directly after each round", we diluted the "limited" aspect.