Guild Wars 2

This is "guild bound" the idea behind this is that item like gear which is soul bound or account bound can be guild bound what this will do is allow guild members to give one another items within the guild and anyone who is not in the guild cannot gain these items also to prevent random looters from stealing gear from guilds would be an option for ranks like which rank can access a part of the bank or which rank can promote/demote other members so which rank can access guild bound items.

Also this can help by items being able to be crafted for other guild member like say if a member will have a crafting profession to 400/500 and other member cannot craft in that crafting profession that member can give the other one items and ten make it for them .

That may encourage an awful lot of “I’ll join the Guild just to buy/receive said item, then take my leave”. Then, they would pass the item on to another. And another. And so on.

Not sure how that would essentially be any different than just making items non-soul/account-bound.

I do see what you mean it is just a idea to bring a guild closer together because not everyone is greedy and it would be a useful tool in the game to be around