If nothing else, brainer, "male" body types for "female" heads is a sure fire way to avoid boobplate.
I don't mind it all that much if it's not a setting that had from the outset gone for the realistic look for the equipment (Eora (Pillars) is an example, the plate armours in 2 are a joy to look at). However, my first foray into FR was Neverwinter Nights, and that has Aribeth in her, erm, plate bodice? Armor dress? Whatever the term for it is. Point being, it's not something that I find that repulsive aesthetically. It did remind me of that one time Larian had self-censored the D:OS1 cover art after there were complaints about it, though - didn't really stop them from cramming D:OS2 full of fanservice-ey armors and outfits later on, but still.
Since you mentioned sex scenes, and given some of the datamined visuals and what my experimentation (described in the opening post) has revealed, I have a theory that, well...
...the identity selector may or may not dictate (urgh) which anatomy the character comes equipped with in the nether regions, since it's the identity that the scene version choice is based on.
I am not really sure as to what the connotations of that are supposed to be, or if it'd trigger the people it's targeted at. It'd run contrary to the tenets of the gender, no? Afraid I am hardly an expert on the subject, what with finding the concept flawed at the core and devoid of objectivity. Otherwise you're getting scenes which are even jankier than they are now (unless Larian are taking their sweet time re-shooting them, which makes all the comments on how BG3 is just fantasy porn at this point ever so slightly more valid).