Merchant classy

This idea is probably part of a larger crafting concept for my noir mmo.
I was thinking that the Merchant Class could have an option to be a crafting-only class.
So people who don't want to be involved in combat but enjoy making and selling stuff could be an integral part of the universe. The option to do missions that involve combat would be open but not required. I have no idea how difficult it would be to do this. Extremely difficult, I would guess.

Of course the Merchant who wants a little more excitement could ease into the dark side and participate in the Blackmarket. This would require combat of course...;)

Hey, those n00bz aren't gonna pwn themselves, as they say.