Originally Posted by
Goober4473
While this does emulate spell levels 1, 3, 5, 7, and 9, the major splits in power for spells are generally 1 (1st level), 3 (5th level), 6 (11th level), and 9 (17th level), as evidenced by warlocks gaining only up to 5th level normal slots, with mystic arcanum covering 6th+. i.e. they match up with the "tiers" of play: apprentice, hero, paragon, and epic.
It's of course fine to deviate from that, but I'd strongly recommend having a large bump in power at 11 either way, since all existing classes have one.
Keep up the good work!