Triple Triad NPC Log

I'd like to see a log book for the Triple Triad NPCs implemented, similar perhaps to the fishing log. As I've encountered new NPCs for this as I've progressed through the game, I've tried to play them as I encounter them. However, I don't really have a lot of time to play them to get all their cards while there is so much other content to get through. I would be awfully helpful to have a log book of sorts that list where they are so we can easily find them when we want to. Once you've beaten them once, the Triple Triad icon disappears above their head, so it can be a bit tricky to remember who the NPCs are.

If this has been suggested before, forgive me for repeating it.