I looked through the gallery for the girls and I just did an estimate of where we are with the completions there are 18 girls left 8 who need a lot of work and 10 who only need a little work done to varying degrees
the 8 who need the most work are Morgana Le Fay, Superwoman, Wonder Woman, Black Canary, Zatanna, Huntress, Catwoman, and Starfire.
the ten who don't need as much work are Mercy, Harley, Star Girl, Livewire, giganta, Hawkgirl, Star Sapphire, galatea, Audrey, and Blackfire.
I think all this should be completed sometime in the middle or end of next summer
Morgaine won't need that much work if it's same as Circe.Superwoman is missing just 1-2 actions more than some others-so also not really that much work.
Also you forget that some other are also missing scenes.
The list
Tala,Talia,Lois
If they won't have slut outfit they are complete,otherwise now it's the time to make them sluts
Maxima,Roulette
no anal scenes,Roulette is also missing slut outfit
Volcana,Livewire,Star Sapphire,Giganta,Morgaine le Fey
first 2 don't have only 1-2 scenes,others a little more
Harley,Mercy,Audrey,Galatea,Blackfire,Superwoman
missing from 3 to 6 actions each
Catwoman,Stargirl,Hawkgirl
bordello content is missing,no idea if Hawkgirl will have slut outfit
Starfire,Wonder Woman
Little progress in the cell,but overall- a lot of work
Huntress,Black Canary,Zatanna
nothing from 3 years.For last 60 months only 1 special in GS and 1 scene in MB.