This is good news, considering grace couldn't even finish season 1 and hated it with a passion seen that tweet regarding the whole 10 episodes is a good sign, its my belief if the ratings are low on rotten tomatoes its cause they only seen the first 6 episodes and not the last 4. which is stupid, that they review something that isn't finished.
One warning sign, she always wanted iron fist to be Asian, so its possible that could be happening and dany rand and could be going bye-bye based of that reaction.
I read your post (about Grace wanted Iron Fist to be Asian and she was really excited after season 2 finale) and then watched that conversation between Colleen and Danny in episode 8 (or 9?) and I was like
"Ok, I know where they are going with this", which made the next episode wasn't really a surprise.