1997 Denise Richards and Dina Meyer absolutely mog any actress working right now. I'd say both of them are at least 9s.
Clearly there are scores of other reasons any remake is doomed, but that's the most obvious one. In the age of DEI, superhumanly attractive women are extinct.
If I had control of Heinlein’s estate I wouldn’t let Hollywood anywhere near it. I love the book and I doubt they will show any respect for the source material