Sometimes it pays to be skeptical.
When news of what would eventually become Legends of Tomorrow first popped up, the concept seemed, to put it in the kindest possible words, contrived. A team made up of Sara Lance, Captain Cold, and the Atom? What. It seemed like a something that had come into being not because somebody had had a fantastic fucking idea for a story that required these characters, but because The Powers that Be wanted to make some money out of characters from Arrow and The Flash that no longer had homes in those shows and needed a concept that could accommodate them as well as other assorted DCU B- and C-listers.
Now that the pilot has come and gone, it now seems that the initial suspicions were correct: Legends of Tomorrow is a show that exists primarily to give its characters something to do.