I think it would be great to be able to have more then one craft lvled to their 100 max because a lot of the decent lower lvl items require a great deal of skill (above 60) and there are next to no low lvl items on the AH on Titan. So if you could have bonecraft and clothcraft both 100 you could make all your own items and not have to worry about shouting to find a crafter for something that should be be on the AH anyway.