I wrote about the flat earth some time ago. I thought to do Nibiru, dinosaurs, hollow Earth and reptilians , but in my opinion it has no application.
Of all things listed in a story I was only asked to explore the silicon trees.
As for the apocalyptic stories, Nibiru as a topic is rather dry, I prefer the volcanoes.
Dinosaurs - nobody is really interested into a pile of bones of the animals who lived, maybe lived, not lived, not possible to live in that way...
Reptilians - we are doing a fine job without them, and if those energy life forms are around, as claimed, they are probably enjoying the arson from the safe distance. LOL