My group is currently in an "off season" while we transition to 13th Age. I've been fielding questions from players who are building their characters out but since I've never run a 13th Age campaign aside from pregens I'm still learning.
One of my players was originally looking at the occultist from 13 True Ways, which fits his playstyle of quirky oddball problem solving. However, he recently decided he didn't like the fact that casters only get spell level ups at odd levels. He thought it made them underpowered on these levels and didn't like the idea of swinging between the extremes. Looking at the class progression I can't really argue with him, but I'm curious if there is something we are missing or that is more noticeable during actual play.