Well blizzard has commented and again admitted that there is a massive shortage of public work orders Are the devs sure that the crafting order system is a success? - #27 by Drough-11150
They also say that they want a better way to connect crafters and custormers than trade chat spam.
Overall the wins of the system are minimal and the admitted flaws are serious so for me this is an acknowledgement that much more work is needed and planned.