Can we control who has access to our vendors, whether it's the public, guild, or alliance?
I wouldn't want my vendor to be selling consumables to enemies or their alternate characters. There may be times when I want my vendor to sell exclusively to my guild. If someone I'm in pursuit of stops by my vendor and purchases my healing potions, that would be quite outrageous.
Also, preventing random people flipping my sell orders:
- flipping: buy all your goods and relist them for higher prices
Your lumber-stealing neighbor isn't just swiping all the wood in the area, he is also buying up everything and reselling it at higher prices
Vendor acessability would be useful for stocking up guild members close by dungeons and such, otherwise there's a change guild members will find no products for sale