Deck-based Combat?

Hello guys! So I know I'm supposed to be working on Empire Undying, and that's exactly what I was doing, when I had this cool idea and I need to know if it's stupid, or if you guys like it: adding an optional deck-based combat mini-game to Sacrifice. This is how it would work, essentially:

- A character's default deck would start at 6. This can be increased to 8 or 10 by spending points. My idea is that I'd first develop this purely via tables, so you'd have a D6 blank table (or D8, or D10) that you fill up with moves. This can be later turned into actual physical cards, etc.

- On their turn, a character rolls 2D6 (or 2D8, 2D10) to randomly select 2 actions. Then the player chooses one of his two available options.

- A player can assign the same move up to two times.

- Each move has a cost in points. You can only have X amount of points spent in your deck.

- You start with an assortment of basic moves, but there are rare moves that can be learned by defeating specific powerful enemies, or taught by trainers.

- Each type of weapon and armor has a number of moves associated with it.

- There are also general moves that can be used regardless of weapon equipped (charge, blind, etc.).

So does this sound fun, or is it just a silly gimmick? This is a quick draft of what I came up with in just 15 min., but you get the idea. I think it can be fun, I love deckbuilding games, and adding a little bit of extra randomness to combat is always a fun thing to do. This can still work perfectly with the core D20 combat mechanics; you'd still care about weapon proficiencies, AC, and all that other stuff, it's just a layer built atop the basic combat. The idea of having a simple deck at first (essentially just basic attack damage and little else) but learning new moves from trainers or opponents is really fun to me!

Should I bother developing this, is it something you guys would like to play with?