That's the blocker for me too. I'd love to roll NetBSD, OpenBSD or Haiku.. but how well does it work with hardware, energy consumption and resource management? It's really just the mainstream OSes or nothing, sadly.
Despite the high idle, Haiku was really impressive. Had all of my staples (vim, tmux, git, ssh), recent versions, in their package manager, and it worked beautifully. Stable, rapid booting, responsive.