Iron Fist wasn't around in the first season of Daredevil, though. It shouldn't have taken until the Defenders to be clear he was superhuman. In Season One, he seems about on par with Stick, who is not superhuman himself.
I think I might have been cool with them waiting until the last episode of the first season for the costume to show up if it had been 10 episodes, but 13 episodes was too long to wait for the Daredevil name and costume to show up. The show just seemed really reluctant to actually be a superhero show.
I wasn't bothered by Jessica not flying, because she hardly ever seems to use it in the comics anyways.