I wanted to post SOMETHING, though I'm still putting advice into action atm...
Mathias - *hopes the first half of that isn't sarcasm, and if it IS attached to the second sentence, that by noting they have enormous trapezius muscles you're just stating how terribly enthused you are to finally see the thick-necked among us represented in pixel art form*
Beo - I liked #3 most, I think. My choice is flawed given I like the ones with the giant necks best. Something looks wrong every time I see the shoulders lowered, and I've got a gut feeling I'll have to re-do shading on the male's shoulders so he fits with new female shoulders rather than vice versa.
ND - I think I've managed to incorporate the hips. I narrowed the torso towards the navel to accentuate the ridge of the pelvis (hopefully). That much looks like an improvement to me. Legs continue to look a lot uglier when split though - like an infected wound bursting past its stitches.
I'm left puzzled over how the breasts could look stapled to the collar (still blind to my own work). Should their base hang lower, as per the biggest ones in the first post, or the starting point? I've tried the latter. My attempts at smaller or saggier look bizarre next to the chesty male. Not that it would justify bad drawing, but the women have an, er, invisible bra on - they'd not be drawn naked anyway.
Tried new eyes. Wexx's edit is helpful (and closest to the mark re the darn shoulders), though I was looking to avoid using the strongest highlight much (if at all). The sprite is the base for movement & battle animations, so I'd like to not go right overboard on colouring. Regarding sel out, I found it unnecessary for the male form and was hoping the female could get by without it as well to prevent poor readability on terrain tiles. Will probably do selout to some degree on clothing though.
Still struggling with shoulders and legs don't part well - look nicer together so far.