Why LTS?
There's so much in flux now... Snap packages in their infancy, Mir on the horizon (or Wayland?), Unity on the way out but not yet gone, the painful transition to systemd... that's gonna be hell to support for 5 years. There are 3 years left for 14.04 LTS, and distros based on it (like Mint) will probably stay with it till the next LTS (or abandon Ubuntu?) - so what's the rush?
Typical Canonical idiocy.