What kind of merchants and NPCs can I have in my house?
You can have the following:
Hastener Smith Enchanter Emblemeer Healer Recharger Border Portal Keep/SI Teleporter Border Non-portal Keep Teleporter Capital City Teleporter Vault Keeper (personal vault) Siegecraft Supplies Merchant Apprentice Tradeskills Merchant Grandmaster Tradeskills Merchant Spellcrafting Merchant Alchemy Merchants (2 sets of two merchants, configured differently )