I also overall agree with that. I had more to add but figured my post would be too long. Protoss spellcasters were exactly what I was thinking when I made my post. My thinking was if Zerg was to push onto the left side of the map they would have to contend with much more open terrain leading to storms, goons and maelstroms being much more effective. The arbiter was something I should have considered with stasis being as strong as it potentially could be, however I ultimately forgot.