[Next_rim]

They don't just sit there, they move away underground while not taking damage, and HT energy is wasted. And if you overextend while chasing, you get fungaled from behind the roach line. If you build HT - better build them vs infestors and feedback em' infestors. Or storm efficiently on hydra or muta. If zerg wants to tank storms, can easily add burrowed roaches to the army. I bet they would be already available, zerg always build that emergency roach warren in the beginning.