3. An original game - we have a few ideas for quite original games not found anywhere else that work in "provably fair" paradigm, have instant rewards, requires decisions when playing and could be fun. It's still an idea that would take same time but... could happen.
Definitely this one, it's always fun to play something brand new, and I think crypto gambling as a whole needs more originality to attract new players. Bonus points if this game has some element of skill or can be played in pvp mode.
I'm a fan of all of it. I'm personally a roulette guy. So I think that would be a fun game to pursue.