I like the look a lot. Just one question - for the peek indices, why are they shown with pip first instead of value?
You know, I actually went back and forth on that. As many of you know, I tend to do things differently than most, but I also thought that having the number on the outside gave more utility if you were playing poker and only peeked a small amount of card, and in a fan you'd get more visual difference as the numbers would mainly show, instead of the pip. When you fan a deck the "normal" way you get a lot of visual variations because you have the number and pip oriented above each other so you see both of them, but when fanning backwards if the the pip was the outermost item you could get a lot of repetition and I didn't think it would be as cool.
I'm not 100% sold either way, but the way I have it now seemed more interesting.
Well, if you're intending them as a type of "poker peek" index, quick readability should take priority. Poker players tend to be a traditional lot, and while I hear and read references to the 'seven of clubs", "7C", "7oC" or "7♣" very often, I rarely hear or read "♣7" unless it's in a bridge article, I've almost never heard any of the variants of "clubs seven", and I've never seen "C7" or "Co7" refer to a seven of clubs.
If you want a little more variety and a little more utility, consider putting the indices in those corners at a 45-degree angle rather than vertical. The point behind the poker peek index is to allow the player to peek at his or her cards without revealing enough of the card to give away the value or suit to a neighboring player, and the 45-degree angle helps because the very tip of the corner doesn't have the index in it - it's a little further in from the corner, in a position that's tougher to accidentally reveal.
But if you simply mean for it to be a decorative device within your design, then go for it and make it however you wish.
I'm REALLY looking forward to see what you're going to do with the court cards, AoS and jokers on this one!
