Love the way you phrased this! Things that are a bit off the board:
- Pred consuming other pred cards. It's a popular request, but can't do since some of the pred characters are pred only and would be very confusing.
- Abilities that would require additional UI or extra steps like targeting
Other than that I'm fairly open! Specially with more flavor-like abilities instead of point focused ones.
One thing coming into the game soonish is different locations, making it more "rogue-like" run and giving the player some new setting to play with.