Alexstrasza and the Red Dragonflight is all about life magic. They are nature guardians who hate violence. Alex hates violence so much that she didn’t even wish death upon the orcs who captured and tortured her and her children. I know they technically use fire—notably at Wrathgate, but symbolically it was a purifying fire to clean the land. Idk I feel like it’s tonally off to go “red=fire=boom.”
Kinda wish they added red fiery spells to preservation and incorporated Black and Bronze magic back into Devastation.