Agreed They had the most interesting stuff behind them, though TTK at fleshed out the Hive to the point of them being at least interesting now. I liked the Vex. They're mysterious, they screw with time, they have cool tech, etc. They are truly ALIEN in the sense that neither the gamer nor the NPCs knew WTF they're up to. The other races are too relatable. "This one wants our God, that one wants our planet, and THAT one wants us for dinner." All relatable. But the Vex? No idea.