Very noble, but ever thought that thinking in terms of billion years is not really productive, and in fact can be counter-productive and destructive?
What with "thousand year" projects turning dictatorial and even "hundred year plans" looking obsolete and becoming laughing stock a few decades after they were devised.
I don't see how one can purport to be the judge on how future generations should live for them, and what the end goal should be millions of years ahead.
Besides, the Sun's death is a really minor issue. It's avoiding the heat death of the universe that will take really good planning...
