By different levels, do you mean interleaved together? Like, 1, 4, 7, 10, etc, for Combat, 2, 5, 8, 11, etc, for Exploration, and 3, 6, 9, 12, etc, for Roleplaying? That would be OK, I guess. But putting them in chunks of levels (which is what we've been told themes are, currently) would be...