I'm doing most of my thinking in Elixir these days. Currently shipping full-stack software with Convox, Elixir and ES6.|
Very interested in continuing mostly-remote Elixir work in the US.
Stayed with a friend in Harvard Square to attend the first startup school, and to pester a couple of very nice SFP founders about what they would do if they lived in a small town and had no co-founder. (I know, I know).
Startup School changed my life in an unexpected way: I realized that I could change my location to make my life better. This did not result in me moving to Silicon Valley.
Instead, for the next 7 years, I spent 9 months of each year in remote Pacific South America, doing volunteer work with friends - and surfing, quite a lot during the good season! Each year I'd return and do about 3 months of contract programming on-site with great teams.
Like pg says, lots of good projects, to really do them right, have to be companies. For that reason I can't rule out doing a startup some day. But it would have to be pretty good, because it has a lot to compete with.