I think there's a lot of untapped potential in the idea of colony, town, dungeon, or planet based events, in the style of the events in Terraria. I'm sure colonies would be more difficult to work out. I don't know enough about stagehands or quests to estimate the plausibility of such a mod. If you script the projectiles in a rare weather event you might be able to trigger something that way, don't know, just spit-balling here. An invasion of tentacle monsters would work within the plot and wouldn't require a lot of new assets. Man, I wish I had still had the old Huge Monster Kaiju style assets, would love to see one of those wrecking a city. Anyhow just throwing it out, would love to hear others thoughts, even if you're not an expert. Idle speculation is good too.