Up until now it's a 5/10.
There are some nice ideas, especially concerning her past (Elbaf, Mother Carmel, Rocks crew etc.), her DF and her whole family.
However, there is also this ugly habit of Oda to always use her as dumbed down plot-device.
If she's really out now, this drops to a 1/10, because Oda would've wasted a shitton of buildup and open plot-lines.