I think you should be able to select groups of zombies and send them to specific points / there should also be challenges or maybe strains of zombie virus that force limitations - in late game even with just 1 point in soul is over powered.
So my new theory is to autoclick heat away and see if that actually has a relevant effect on exotic points - sometimes the heat meter fills up completely and it doesn't affect the reactor
It's like the upgrade cost multiplies with every upgrade you get and every prestige only increases things additionally - 200 million exotic points = +a few qa's of vent power
It gets sooo annoying be like ok *changes 1 thing* reactor explodes, loads file, repeats 20 different times, reactor just explodes despite calculated numbers