I have to admit, I'm really enjoying Iron Fist so far (eps 1-7). My intent was to hate-watch the first episode, but that didn't pan out. It's not good neo-noir like Daredevil, or art like Jessica Jones, and that's okay. For what it's worth, I'm burning through IF at a much faster pace then either DD or JJ.
Colleen Wing is good, Joy & Ward Meachum are, somewhat surprisingly, better, and Danny's Earnest Clueless Zen Trust Fund style is strangely disarming. Plus, RZA directed an episode, and as everyone knows Wu-Tang ain't nuttin' to... ahem.
As for The Unbearable Whiteness of Being Danny Rand... no one would suggest fixing a banker character by making them Jewish. At least I hope not. Same principle applies here.
You don't fix a lack of diversity by embracing old ethnic stereotypes. I say this as someone who was called "Kato", "Grasshopper", and "Bruce Lee" more than my share of times as a kid.