...to counteract inherent flight.

Fire giants: vuln cold, vuln mental, resist physical, resist fire
Cloud giants: vuln positive/negative, vuln mental, resist physical, resist cold, fly, vuln disease


Yes, positive/negative is easier to get than cold, but it's also harder to have "on a stick" than cold damage.


I think if you asked any fire giant (esp. a rager one) if they'd like to trade gaining perma-fly for gaining a vuln to disease, they'd probably say yes. I would, at least.