I love the Leprechaun angle. For that to take off, somebody's gotta photoshop Isaiah into our logo as Lucky and do it perfectly. Maybe he's known thereafter as The Leprechaun, maybe he's called Lucky Charm, who knows. On the other hand, I get the sense Isaiah isn't going to be thrilled about any nickname that plays on his height. The prophet angle might be more to his liking. How about calling him Yah? Covers both the biblical name and the Boston accent. "Yaaaahhhhhhhh dude!"
But perhaps he really doesn't need a nickname, because perhaps his destiny is to improbably become the first thing basketball fans think of when they hear his name. Could Isaiah's career accomplishments possibly ever outstrip Isiah's? He's already 27, so he's way behind Isiah at the same age...then again, he's only 27, so he's got several more years to try to shock the world (way more than he's already shocked us) and lay down a better peak than Isiah. Needs to win at least two championships, at the minimum.