OK, so this isn't so much an entry as an idea for making card connect to each other. What if the connectors on each card had a prompt to connect to some other card? I was thinking of ways that the card backs could help people who are trying to organize their cards in some meaningful way, so playing the game would actually be useful to people. Ex:
The idea that you can use stickers to connect cards would be extra -- it's basically a way to create non-tabbed puzzle pieces. Stickers could be in fiction (e.g., a cavern collapse) or meta (e.g., various game symbols like meeples, dice, etc.).
Of course this concept is related to StickerDoodle, but you can take the sticker part out and keep just the prompts for connecting paths to each other.
Thoughts?