Mulan does represent the problem with these Live Action Remakes.
Hit the exact same beats: "It's the exact same as the original, why bother?"
Has some differences and doesn't have all the same beats: "They took out X? That was my favourite part! I'm not interested now!"
Try something new and original: "This new things scares me, why didn't they base this of something pre-existing" (A shareholder probably said that last one).
Solution I guess is to consider these cash generators for new animated movies, that's where the gold is at.
And I don't know why it took for the last trailer for me to realise that the Imperial Army not allowing any women in it is a lot weirder now that the Huns have a Female Witch on their side that's helping them win the battle.