Decks of cards will definitely be added in the future. Many games you suggested are trademarked, and therefore wouldn't be implmented directly, but we were planning on a Uno spinoff. Go and (Chinese) checkers should be trivial to add.
Regarding Dungeons and Dragons, I was thinking about 1 page RPGs (example: Lasers and Feelings). These often have licenses compatible with our game, often allowing to be directly used or modified as long as the original author is acknowledged. These games would fit the SS13/SS14 round format better, as they take little setup, and it would not be a massive lo