I’ve never come across any, and I’ve looked through A LOT of Mage Knight artwork for this mod. If any was created and shared with me, I would need to rework the starting decks a bit. They all point at the same artwork currently.

Would multiplayer be more complicated if you couldn’t quickly read an opponent’s played cards?

I’d certainly love to have some original non scanned cards. I cleaned my scans up, but I can’t help but feel they’re a copy of copy of a copy….

Yeah, your scans aren't a problem for me, I just find the original artwork pretty unimpressive. They reuse multiple art pieces with slight changes, and every starting deck is the same except for two cards. I think custom hero decks would go a long way for immersion, even if all of the cards had the same abilities that they do now. It'd also be neat if spells had fitting art in the background of their text.