When I think of humanity's future in the galaxy, I envision a great variety of sovereign worlds involving different characteristics. My thoughts of the future are more along the lines of: 'pick a solar system and planet where you belong'.
I don't think of progress as a linear course, but rather as cycles. Empires and cultures rise and fall. We observe problems and weaknesses within each system, then we overcompensate and overshoot and the pendulum swings back for a while.
Humans will always seek balance and this involves groups going against the prevailing trends. This is how we explore a multitude of options and ways of life.
I don't believe that there is a single prevailing future, but rather an open spectrum of possibilities.