Inari is awesome on titans, her tile damage is amazing and purple are my best by far since Jackal is maxed and emblemed (Inari gets none until Jackal is +20, Scarlett ate some too, tile monsters the three of them).
I had thought Inari would be in my regular teams but she has a bad habit of dying before firing. Emblems may eventually help her dodge some enemy specials, Rogue is a good class (has kept Jackal alive many times) as the skill is very, very useful. I do sometimes put her in the raid team because the dodge is so cool and her minions are evil little things (30% attack off of her amazing attack stat, got to love it). Little details that make the GAME more fun.
I want to like Vivica but haven’t managed it yet. Kunchen does it better and I find that if needing healing and another skill the 4* have the answers most of the time (clease, debuff, attack boost, defense boost, unless you need a Holy healer in which case Vivica is the only reasonably obtainable answer).