That would indeed give Carpenters some self respect rather that always getting looked down by their castle_smithy peers .
I don't feel Carpenter is worthwhile right now. I usually go straight for clay mine->market(and a school)->caravan stable to start trading hides, wool and vegetable for tools,warm cloth,stone and pies for expedition.
The market and weird trade values make a lot of buildings not necessary. Its like a cheat. And you are able to get rid of all those extra hides and wool.
Seriously, exchanging 6 wool for instant warm clothing is way better than getting to manufacture it.
Wheelbarrow could be like a tool which specifically increase the carry weight from current 20 to 80/100.
Would fix quite a lot of things like unable to harvest all fruits, getting half your builders die of hypothermia while making a keep,etc.