So you want to increase the data transfer between client and server massively while the system checks every retainer on every player in the instance.
Just no. The delays would be insufferable. Hence the reason it has never been done. on any MMO ever.
If you aren't on the given class/job that can need on it, then you don't need it. If you want the item that badly then run the content as the job that can need on it. If the job you want it for isn't at the level to runm the content, then you odnt NEED it, because you can't equip it. Get the job to the level for the content, then run it.
