I have been watching Legends of Tomorrow, and it is a pretty fun show, but after 3 episodes I can't believe the stupidity of the characters. After Episode 3 or at least Episode 4, they should have finished Vandal Savage.
This is the problem with the show, it is not the Time Travel Element that is actually interesting...it is the fact that the Villain isn't really a threat compared to the team they have. I am sorry, an immortal can't be killed, but he can be locked up, imprisoned, incapacitated.
I think Vandal Savage should have never been the main villain but a catalyst for the show. Also, episode 3 proves these time travels are morons. First they expose themselves and their identities to the villain, something you should never do. Second, after doing that they are going to find him in the 80s instead of going further back in time? First of. Why? In the 70s you still have the advantage of more advanced technology and knowing where he is. In the 80s he knows about you and knows to prepare for you.
Why not go back to the 60s? He still has to be around...just find him and you have the element of surprise again. Also, why not just go further back in time to Egypt and investigate and find him and kill him there. Again use this as a catalyst for the show and let the Time Council be right, and the rest of the show is fixing the world from their mistake about killing Vandal Savage. Heck if you were really worried about him destroying a future. Why not kidnap him, and take him into the future where the world is about to end and drop him off there. Boom...instant success.
I know this doesn't make as fun as a show...but that is why I think a using the character as a catalyst is interesting...make the show be about watching other dictators and evil be worse than Vandal Savage and making the tough decision that you have to put him back in history.