I love leveling as Defense. I recorded some fights at 30 on Alderaan, it's pretty smooth IMO. I actually enjoy leveling as Defense more than Focus, especially the early levels: Edit: Note that fights end fast with Kira but you have some downtime, fights end slower with Doc but you end up with little to no downtime. If I decide to blow my multitude of 1 minute cooldowns I can beat elites with 90+% health with Doc.