The second revamped back is my favorite although I do like the crisp white edges of the last one. Not much into the design and process therein but I do know what looks good to me as an avid collector so take my opinion for what it's worth. That of an average collector, if you please.
Thanks for your input! I appreciate feedback from average collectors most of all - I'll need the average collectors of the world to help get this printed! :-)
I could easily add the white edges to the second design (actually, I just decided to do it. See attached), but part of what I like about it is how an individual card gets lost in the group in the original - kinda like a zebra. I do understand the preference for the white edges though. It can be a lot easier to deal when you can clearly see the number of cards in a pile. Plus wear and tear will definitely show more quickly on cards with bleed edges.
If the deck's background color was solid, as you'd find in a black deck, then yes, chipping shows rather obviously over a brief time. But the pattern can also conceal chipping much as it would on a pack of off-the-shelf Bee Diamond Backs.
What you mentioned about the cards getting lost in each other is PRECISELY the reason a deck like this is popular with a magician or a card cheat - certain sleights of hand become simpler when the lack of a border disguises your sneakier moves. It's one reason why casinos have mostly moved away from using borderless card designs, generally preferring something that has a hard border or that fades to a while border.
Borderless cards are NOT ideal for cardistry. Some people use them for poker - but someone who knows how card cheats work would never play using a borderless design. It's not impossible to hide sleights with a bordered deck, but it does present a more difficult challenge to the cheater.
For magic... Well, most magicians prefer a deck the audience can identify with, so unless the deck is especially suited to the audience, they'd be more inclined to use something with standard faces. Some have claimed that when a spectator sees an unusual, fully-custom deck that they assume it's a trick deck. This isn't really true, certainly not for the majority of spectators. A full-custom deck will be distracting - your audience will be paying sharper attention to the cards, more interested in them than in the deception (and at the same time, they'll become nearly immune to your attempts to misdirect them because they're staring so hard at the cards in your hand). A creative or original back, usually done in a traditional style, combined with familiar, standard faces (perhaps with a slight tweak to the coloring) that people will immediately recognize and identify with, is the better choice for a magician.
What might be some "mission-specific" decks? Nearly anything from Big Blind Media would go over better with a Goth crowd or a costume/Halloween party. Older people (especially inveterate bridge players) might like the simpler designs of a pack or two of Congress. Bridge-sized decks are also popular with many people who have smaller hands than the average adult - it's easier to manipulate and conceal the smaller cards. School-aged children younger than high schoolers go nuts for attractive, cute decks like the Dog and Cat decks or the M&M's decks.
Wow, am I getting into a tangent here... Move along, nothing to see...