I’ve been thinking about how storm affects PvT and I am pretty sure it will delete SCV allins. The reduced damage rate will be significantly weaker vs high health or high healing units. That means it’s weaker vs marauder medivac. But, with SCV allins, they usually don’t make medivacs. Medivacs are a value engine, meaning they get value over time, and that means you want to prolong the game. So SCV allins generally don’t have medivacs. SCVs are also low health. SCVs also don’t move fast, especially if they are repairing a bunker or a tank. So we have the ideal unit to kill with storms and the #1 scenario where the toss needs to kill mass amounts of SCVs is the SCV pull allin. So any SCV pull that hits after storm can be researched is simply non viable on this patch.
I think that’s OK because the reason SCV pulls happen is that terran can’t defend them when doing a move-out. The moment you get a production wave, you move out to do an attack. You then have a period before your next production wave finishes when your are undefended. Terran has no anti-ground that doesn’t cost supply except for the planetary. But planetaries can’t afforded when doing timing attacks. So, there is a period when a prism can fly in and delete all the SCVs for free. That’s why SCV pulls happen. Your SCVs die either way so might as well bring them for the fight. Anyway the viking is getting buffed and it is the main defense vs that exact scenario. After it deletes the prism, it can fight a couple zealots, and then join the fight. This means terrans can do 2 base timing attacks without having to pull the scvs.
Another consequence is that toss will be better at shutting down mass repair in general. Anytime mass repair is used it will be weaker. Mass repair on planetaries and bunkers come to mind.