Like a well-meaning-but-sort-of-annoying-best-friend, I worry about the future of 13th Age. The 3rd/4th edition fantasy RPG house blend by Rob Heinsoo and Jonathan Tweet hit the perfect note, melding those two polarizing editions together into something that is fast, playable, and fun, all the while being its own thing and fostering the creativity of players, something its ancestors were oft-criticized for not doing.…