Not so sure about Killjoys, the vast majority of killjoys have been males.
The Expanse has many terrific roles for females, possibly the best of any of the space based shows, though on the other hand, the traditional roles are all there too, too often women exist to be strippers and "escorts".
Eh, I would not really use TMP as the best example, because I would be willing to bet that if you counted the number of bridge crew on a random Voyager or DS9 (sometimes STNG) episode--which I am not oding--you'd often get a 50-50 mix.
RAMA
It is tricky to do comparisons between movies and TV shows. I'm sure they occasionally hit the mark. In general, there are twice as many male characters as female in every Star Trek show.
I also just remembered that NuChekov 'does a Kirk' to the female transporter officer in ST09. Unlike Kirk, at least he saved them I suppose lol.
Killjoys seems better than average because the female characters appear in diverse roles, faction leaders, gang bosses, brood mares etc. It also objectifies men and women to a roughly equal degree.
I noticed in the first few episodes of the Expanse that the roles were starting to look divided along gender lines (e.g. hookers vs miners) but they pulled it back somewhat later on with female starship crew, female thugs etc. Probably still more men overall but it shows that it is possible to move in the right direction, The infamous Carol scene in particular does make you question if Star Trek still doesn't get that there is a direction to move in.
Pretty much all the female characters in the screenshots I provided are sitting down, at their own station & don't change from scene to scene.
I didn't bother to count runners on errands.
That's cool then. 7 women isn't bad. How many men though?
EDIT: In those images it seems to be 7/9 albeit Chekov, Spock, and Uhura being absent so 7/10 normally? That's not too bad.
I must admit, I've only watched them twice each and not recently. In most of the close ups of the stations there seem to be more men on average. It may just be the camera angles. Still, progress is progress.
Of course, I have yet to see the new movie. I'm sure Jaylah is going to be a refreshing female character. I will judge it on balance obviously.