About the 3 poker variant.. its amazing, I never played it and its the most addictive one: better than 5 cards version or texas holdem. Simple, fast, and conserve the essence of the game.
If you are thinking about new game modes...a jacks or better (video poker) version would be cool, because its also easy to play, fast and addictive. Check "Poker Ladies" (MAME arcade from 1989) for ideas.
Thanks also for maintain the 80s spirit with these creations!