Just watched the first two episodes. I'd been holding off until I caught up on the episodes of Arrow and The Flash I'd fallen behind on, just in case of possible crossovers.
Spoiler:
Speaking of, I loved Damien Darhk's cameo in Part 2.
Chronos was interesting, I hope we see more of him.
Also, I had no idea a version of Gideon would be in this show so that was a cool surprise!
All in all, I really enjoyed it!