PoE Freedom of Movement, Brand builds

PoB: Why Raider? Haven't played her before. 20% Exposure. Great avoidance defenses including high evasion (with damage reduction from Wind Dancer), Dodge capping is doable, move speed for mechanics dodging, Phasing + Ailment Immunity, what's not to love? Why Brands (why Penance)? Because I love the play style. I've played 3/5 Brands with Penance and Arcanist left to go. I want to do cold conversion because then I can hopefully leverage Taste of Hate, one of my favorite flasks in the game for its damage and survivability boo