15. Scales does seem like a mismatched description. Depending on the fantasy that the creator based them on spiders can have armor, though in reality that would be closer to crabs than spiders. Considering the substantially increased weight due to increased size to suit a relatively normal sized human upper-body, it's not unreasonable to assume that the composition of the body could be different in order to support the increased weight.
16. Indeed there is a problem with "take lead". The only working condition for success is if you have ever successfully proposed intimacy in the meet interaction. Edit: actually, it seems I mistook a condition as something outdated, there is a very high obedience check as well.