Yeah, I figured it was a non-starter from a performance perspective. The thing that takes it right off my wishlist, though, is your second point there. In my head I was kind of conceptually locked onto the idea that a player would be inclined to duck into a POI to escape the effects of a storm, and that it would be fun if the storm could have alternate ways of making that shelter spicier than expected. Additionally, the limited number of T5 POIs means I've run through all of them so many times that I kind of yearn for the game itself to change them up.
But if storms are frequent (and I kind of suspect in the wasteland they will be) then that would just turn every (wasteland) POI into a dull slog.
Mainly I'm just excited for what storms are going to bring to the game, and kind of wondering out loud how they could be leveraged by modders to bring some wild additional chaos.