Yes, you can do all of those and simply ignore height/weight, but with cinematic conversations, having your PC be as believable as possible seems like an important thing to me. or a small & sneaky guy, or a tall and thin nerd, or a hand-to-hand tower of muscle, or as yourself, or, or. That lady in the front seems to be bigger than the rest right? Take a look at this screen taken by vyvexthorne : they do seem quite similar, but is hard to tell from that image. Not sure if male/female heights are fixed. Great! This seems like the only evidence, so far, that at least NPC's will have different weights. Of course not, but that could be said of almost any feature right?
