I didn't see Legion actually (I know shame on me). But yeah, Fox can do a lot of great things. I don't think it's about the spandex, I think they need a coherent timeline, message and good writers and directors, and right now they are hit or miss. Most or their hits are unrelated standalone. But the timeline is so messed up that they might as well just reboot everything or at least the main X-Men.

I watched the first season of Arrow and it was ok, but not enough for me to continue to season 2. I am somewhere in season 3 of Gotham, it had its moments, until Barbara Gordon. I didn't even try the Flash or Legends of Tomorrow or Supergirl. CW shows are just CW shows, doesn't matter if you put superheroes in them, they are still more CW shows then they are anything else. I can totally see an Arrow and a Supernatural crossover, just because it's a similar vibe (or was in season 1 of Arrow and season 6 of Supernatural).