I would expect that the way the cards are called, they each have a generic card# that are called, that have the associated image embedded with it. A customizable card means (think, right now we have what 62 cards? You're talking about increasing that card# by +1 for each player) + let's say 250,000 cards. The amount of Space for 62 cards, Vs 250,062 cards.

You see where there might be an issue? hehe

Now, if we were to simplify it, and just make a quest where we can put our face onto the face of the Warrior of Light Card. They might be able to toss a variable into the image for the card. Check if quest complete = yes load portrait else load card. The tricky part might be putting your face on your card, and your OPPONENT'S FACE on the card your OPPONENT played. Vs your openent putting down a card, and you seeing your own face.

Depending on how that is programmed currently, I could see it turning into a rabbit hole.

That being said, I think it would be a great addition. At least the portrait, if not a customizable card.

The minion Idea, I love . . . but . . .. what job would it load? the same job/equipment when you earned it? when you summoned it? would it always look EXACTLY like you currently do?

(I'm the largest Roe. It'd be awesome if I quested for this minion, then fantasia'd into the samllest lalafell, and my Minion was as large as I am! XD)