One of the biggest projects Mark Rosewater is in favor of - which many fans of Magic are as well - that seems to be impossible to get through R&D is the idea of a third Un-set. While the first two non-serious sets sold well and have many cards that are considered iconic, they were also over-printed, and many simply don't like their style of humor. Despite this, Rosewater has pledged to get a third silver-bordered set printed eventually. Recently, on his Tumblr blog, he discussed a few things that might appear in Un-3.
When kallixti asked, "Have you considered a set with 100% Mark Rosewater artwork? I think it would help your killing-Magic project, which doesn't seem to be going so well right now," he answered:
I’ve got my crayons and am up for the challenge. : )
Sadly, I think Magic has drifted away from my style of art.
Rosewater famously, or infamously, did the illustration for Unglued's Look at Me, I'm the DCI, and it would be a crying shame if he weren't allowed to break out the Crayolas and make a homage to that gloriously rendered piece of artwork in a third Un-set.
Also talking aesthetics, when voidspinner asked, "Did you ever think of having magic cards with glow in the dark ink on them? Like have one side of double faced cards glow or something ( I have no idea how/why you would play magic in the dark )" Rosewater's response, punnily referring to the set name, was:
I played Magic in The Dark. : )
However, although it seems to be somewhat too cheesy for ordinary Magic, glow-in-the-dark cards seem to be a perfect fit for an Un-set; after all, R&D had already considered cards with scratch-off text boxes for Unglued 2, which never saw the light of day. A cycle of "radioactive"-themed cards with glow-in-the-dark ink would be a fun and memorable gimmick.