Kinda necro but I think the reason why SAM isn't getting smite may be something to do with DD RUN with lionheart. RUN is designed to be a tank job, and it can really only DPS with massive amount of attack buffs. If SAM gets smite then RUN/SAM DPS would improve a lot since it low attack is it's biggest weakness. Then it'll create a scenario of a tank job able to keep up with real DD and still gets massive parry and massive meva/mdef etc.