Ok. I was avoiding this thread long enough. Do you guys realise that Minthara is a "failure" for a Drow?
If you pretend that you're Lolth in front of her spiders they will tell you that she lost "your" ways.
If you take a look into her mind after sleeping with her you'll find out that she's afraid of something.
If you convince her not to kill you, she will tell you to met a person at her service, someone who got punished by Lolth. And Minthara talks about him with compassion.
Even more she has house Baenre mark as a tatoo. Maybe Larian made somewhat a mistake here, but normally that would tell that she's not a member of the house, but their property - a slave.

Soo... I said before already that the current hairdo suits her better and I'm standing by that... it suits her as a character, not a candy for an eye. She's fallen, probably humiliated, probably striped of all dignity she had once as a drow cleric. She probably had a moment like this at some point:
[Linked Image from cdn.vox-cdn.com]
But more likely not voluntary. And then she has this hairdo in a quite strict style now comparing to the messy one she had in previous patches. And she is a strict harsh person. That detail can be seen as her way to show that she's going to fight back, that she took this position of more of a fighter than a woman. Maybe one day after all the fighting will be done she'll grow her hair to feet, but now she's just keeping it in order.

I wouldn't vote against giving her better and more feminine face, she is an elf and a drow after all. Slightly tilted bigger eyes, slightly plumper lips, more subtle or stylish make up. But the hairdo looks more like a part of her story for me, than a choice of style and it's more suitable now than before.