LFP batteries haven't been
LFP batteries haven't been "overlooked." They've been around for a while, but suffered from serious shortcomings (low conductivity, low tap density, etc.) that made them less suitable for EV's until only recently, when improved cathode materials and processing has largely overcome that hurdle. But they still have lower energy density, lower charging rates, poor cold-weather performance, and real-world lifespan is still unknown.