cross class should just be removed. the system seems to imply that you can pick to CC 5 skills from a pool used by another class, but everyone has to use the exact same ones anyway. largely driven by the fact that some are absolutely mandatory (provoke, cleric, swiftcast), and, of the rest, the ones you can pick from are so limited, there's only a few that could ever be of any use.

Having said that, for the first time in over two years of playing, I used surecast recently in a7s (suck it engine oil)