To be honest the skill seems like it would be not so good in the long run as the best gear will probably be player made (it is a game world designed to host hordes of people for god knows how long it was originally intended. SAO wasn't so much a game as it was created to be a functioning world, would make sense for the best stuff to come from other players as otherwise many would be out of a job if npc weapons were better etc)

I'm not saying whether it should be included or not, just specifying that technically as a skill it's very limiting and restricts you from good gear.