Honestly speaking, I do not want alts to be a thing unless you got some kind of alternative shared stash separate from a main bank or you can mail to your alt. A lot of altaholics are also hoarders, they will find some way to store as much as they can. If there is no shared stash for transferring stuff, or no way to mail the alt then they will resort to using other players as a shared stash to give their alt the items which will lead to lots of scamming.
People who do not want to share stuff between their characters can do so with their own self imposed rules. No need to make it easier for scammers to steal stuff from the ones who do not share that opinion.