"Ludology" or "Comparative Ludology" would be a great narrative hook, but won't tell anyone what you actually do, so it depends if you want to inform or catch people by the curiosity. Both are worthy goals.

Plain fonts can be useful: the company name and tag-line ("Rapid Development, Robust Results") on my corporate cards are in Courier New, which all my stylish designer friends sneer at and all my technically-oriented friends say looks good. Since my clients are all technically-oriented, it works. So the depending on the market, the right plain font could be good (or a different font for each personal tag? Might work, or might be too busy.)

I actually kind of like the image, but I'm weird: I recognize the book, associate cards with mathematical gambling strategies, and spent far too much time working with DAT tapes to mistake the miniDV for VHS.

If you can figure out the typical target audience for a card, the design choices become a lot easier. So asking yourself, "What situations have I been in where I wished I had a personal card, and what kind of people would I have given one to in those situations?" could clarify things.