The Tradehall gives you a huge amount of storage for a permanent display, safety, and access to storage without needing to drag inventory around. So I do agree it blows any other merchant out of the water.
I kinda get wanting a second one because properties like the tradehall are usually occupied by the same person(s) for very long periods of time. But same goes for other properties, there's some that have been owned by the same person(s) for a year+. Trying to find a property to house a new group is mostly just dependant on luck because PCs rarely die, you'd just have to pray a spot opens up but there's no guarantee.
I kinda get wanting a second one because properties like the tradehall are usually occupied by the same person(s) for very long periods of time. But same goes for other properties, there's some that have been owned by the same person(s) for a year+. Trying to find a property to house a new group is mostly just dependant on luck because PCs rarely die, you'd just have to pray a spot opens up but there's no guarantee.