I've already given my opinion on this many times, but I'll say it again.
Storms should be dangerous in themselves; they should kill you. I understand that some people don't like them, but that doesn't mean storms are bad. Besides, they can be disabled in the menu. Since 2.0 came out, I've been asking for an option in the menu to calibrate the intensity: more damage, less damage, longer duration, shorter duration, intensity, frequency, etc.
Unfortunately, it's likely that tfp will end up nerfing the storm for everyone so much that it will lose its concept of storms killing you, and I'll have to install another mod to the endless list.
What some detractors of storms don't understand is that the beauty of storms is that they create adrenaline-fueled, intense, and dangerous situations, and that's what makes it fun, especially if you play with permadeath. If you don't like that concept, that's fine, but it doesn't mean it's bad, as some people try to make it seem.
Now, what could be improved about storms? In my opinion, the edges of the biomes would be the priority. As others have already mentioned, you go from a sunny, wonderful day to hell in just one block. I would make the storm warning text messages optional, and maybe add a protective suit for the late game to temporarily mitigate the effects until it breaks.