As I am a new player I can't say much about how needed/effective trading paths would be, what I can say is that I was looking forward to a new path for GF and I end up with content I already know from GWF, I'm a bit disappointed :(
Bah, with my tank mentality, I went full prot, ignoring power,arp,crit going for def,defl and regen but I've been maxing STR/CON as dwarf so I'm half between a deflection turtle build and the abilities for a regular conqueror build. Will probably respec the feats for conqueror but it costs a bunch of AD and I wanted to buy…
I'm pretty sure you cannot get an uncommon proc from crafting a Rank 3 common Person. The whole point of having a Rank 3 Common is too allow players access to all craft without having to pay for Uncommon through Epic Persons. Your best bet is definitely the AH or Profession pack if you have the cash.