Oh, the specialization you're talking about at the start of your post is only for the trading discussed nine or ten paragraphs later, not for what they sell? I see. Sorry, the distance between the two concepts threw me off.
And yes, trading up does sound kind of interesting, though it also seems to cover some of the same ground that the crafting, recalibration and optimization systems do.
It's why i said it's just a thought, that something like the above would of made the settlements more interesting.....i would of prefered that over the optimization station, never been a fan of it.......