She's been nothing but a walking plot device following her reveal in 7. They've done little to expand upon her role since introducing her. Even 'Little Nobody' makes more of an impression than her.
She is someone for Luda and Tyrese to play off of, but outside of that, she doesn't have a point on the team since Tej does everything she does. I think she has good chemistry with the team, but she doesn't have a point. So it's a wash.
Fast 5 cemented the team and their roles. Losing Paul, Sung, and Gal hurt and they haven't been able to replace them.
Paul was always the emotional anchor and what kept Vin and the group together. Basically family. I didn't give a shit about Letty and Vin, but Paul and Mia. It worked in 1,4,5, and 7. Having him always as Vin's rival/equal added a lot too. Now, they don't even have that since you know Vin isn't going to play equals with The Rock. Notice how the Rock jobbed to Statham in the beginning of 7? Vin ain't ever going to let that happen to him. The closest was always Brian in racing. He grounded Dom.
Sung's and Gal worked extremely well in the group. He was the laid back member with a quick witt. As they said, someone who knew how to maneuver. It helped a lot the cool and smooth member of the group was Asian, since it's such a drastic departure from basically every other series where they are either Kung fu experts or the basically in Luda's role where they are the hacker.
Gal was the female muscle for the group. Could work the scenes boys can't with her sex appeal and also beat the majority of the guys asses too.
The newest members, don't quite have it. Ramsey, just fits in the same spot as Tej. I feel like they should have made her more of a Q or something for the group. Not just another hacker.
Eastwood, I didn't mind. He's the new group busta. And guess, supposed to be the newbie. It works a bit, but he'll need to add something to the group next time.
I like Statham and Russell, I feel like they fit in fine. With Russell solely being there as the G man, but I do think Statham shouldn't be a direct member, but more like the ace they call in at times.