Loved this. I'm a science fiction writer and have written a five part book series (still in development and edit) which basically follows your drift exactly. All the conclusions you've made are spot on, based on my research. Yes aliens and the dyson sphere figure into the story - stay tuned. As well as abduction and the creation of adaptive hybrid humans. I mean our species definitely needs a genetic rework, think Donald Trump and Mitch McConell for starters!