Originally posted by -Pr-
Is he more powerful than before?
No real sign of it. His power loss was a plot device to get him into an "Enter the Dragon" style tournament, with refugees from K'un L'un who founded their own city, and had the intention of conquering their old home. Danny was having power issues at the time, and they lured him in with a promise absorb the chi of the losers, hopefully jumpstarting himself.
Of course, in the end the problem was a psychological block, that he learned to overcome over the course of the event.
However, there was another event called "Iron Fist: The Living Weapon", back in 2014 or so, where he also lost his powers. In it, Davis the Steel Serpent was Chi draining people to death, ala 1990's Parasite, and Danny displayed a similar ability to amp off a cities worth of people. With the amp, he animated a building into a mobile "giant robot" type monstrosity, to battle a being of fire who was planning to reap the souls of everyone in the city (And presumably, on Earth.)
When that failed, Danny got a further amp from "The One", a robot he destroyed in his first appearance, that for some reason had his dead father's face (His frozen corpse was in the area), and carried Chi from every Iron Fist he defeated (A lot of them). He sent that chi to Danny, as a more permanent upgrade.
And then Danny made like One Punch Man on the flaming sky demon.
That series was so ridiculously out there, I'm not sure it should be canon though (I will say I enjoyed his follow up, "Immortal Iron Fist's", where he brings young K'un L'un girl Pei with him, sends her to school, and she learns to get along with kids in a Breakfast Club like story, as Danny fights various demons, before they team up against the final boss.)