i agree, carts will have a huge positive impact on trade/commerce.
I second the cart/pack-mule idea. (Actually I'm more like thirteen-ing it)
carts would be a definite plus. Honestly just a hand pulled cart that can carry 4 "back slots" would be great.
I totally agree. We need a transport system that does not involve our equipped bags. Also, boatcrafting is in the skill list, though I don't believe sailing or canoeing was, correct me if I'm wrong.