Not that I care much about the companions, since I'm a custom party fan, but here's my impression to Lae'zel:
For me she is almost the same as Viconia DeVir was back then. There is only one big difference here, which probably offends many. While Vicci lost her connection to Lolth and found comfort with Shar, and over time found trust in our party by showing her weaknesses sometimes, and this is not the case with Lae'zel at all, because she wants to please Vlaakith. I am very curious to see if there is a twist to this in BG 3 and Lae'zel is also cast out by Vlaakith, is lost and confused, is picked up by our party and goes through a similar evolution as Vicci in terms of her experience and relationship with others. Of course, it would then be a kind of Vicci copy, but something like that has stood the test of time.
And yes there are still front fighter companions missing. It is possible that we will get a Kensai:
https://scryfall.com/card/clb/290/oji-the-exquisite-blade
