Please do not make the Silver Surfer a woman and make Sue Storm the focal point of this movie, and certainly do not force a sexual relationship between Sue Storm and a female Silver Surfer.
If the cast news comes out and they've made Silver Surfer a woman, it's going to cause a lot of backlash. There is only one Silver Surfer, so you have to introduce him as the first in the MCU and not some alternate version just to force an agenda.