This is a bit off topic but refereeing to your players that don't like proxies, I've found that if people don't like playing off a basic land or a backwards card, if they get some acetone they can modify the mana rocks from Mirage, erasing the Mana cost, Name and the 'comes into play tapped' clause writing in "Mox ___" and just doing a 0 for the mana cost. Same with Guilded Lotus, Second Chance, Ancestral Vision. I've found that if it is just an altered card people feel like it is playing with a real card and helps opponents know what your cards are. Also if people don't wanna mess up their real cards, the older basic lands that have the "Tap: Add X to your mana pool" makes them feel more like moxes.
Not really off topic. We do have access to these and a few are made, but I thought I'd check and see about the printed ones and AP ones. Mostly to add a distinct flavor to our vintage scene. That is to say that I can see it taking on a feel of its own because with high quality proxies, there is a second incentive to play. Sort of like "cool, I get to use my alternate art black lotus" feeling for example. When well done, proxy's not only take the "money shaming" out of playing with powerful cards and allow players to focus on what's important (high power/high stakes plays that involve a very well developed meta game) but also allow for a second level of immersion into the artistic and aesthetic appeal that keeps magic players from moving on to poker or other competitive card games.