I wasn't a fan of that. From what I recall of the little bitty comic knowledge I had, I thought the Iron Fist was meant to right wrongs on Earth as well, not just train for 15 years in preparation for the gateway to open and hang out or fight intruders, then wait and train another 15 years for the next opening.
Plus having The Hand being the "immortal enemy" of K'un Lun is just a poor idea. They should have established Gao's connection to the other city of Heaven as K'un Lun's rival and her having positioned herself to manipulating the Hand here being the link to Daredevil, etc.
I mean, they're going to have to bring up the other cities. She's using Steel Serpent's symbol and it only makes sense Davos is going to become the Immortal Weapon of that city to oppose Danny. Pretty sure he's Steel Serpent's champion in the comics from what I've been told.