They don't buy the expansions for the continuation of a story arch, but for the extra factions, units and artefacts added to the already well-functioning game. Heroes VI has the longevity of your average fruit fly. The choices made when designing the editor; the lack of user-friendliness, the lack of an RMG and campaign editor are to blame.
This article refers to the town. For the town structure named Castle, see Fortifications. Castle is a good alignment town with the knight and cleric hero classes. Castle represents Erathia. "Castles are home to the Cleric and Knight hero classes. Castle armies are primarily composed of human men-at-arms, though these towns have also formed an alliance with the griffins and are under the
Dragonspire: Unupgraded level 1–6 creature generators, Castle, City Hall, Mess Hall; should try to get Earth, Air Magic and Wisdom. Blight: Level 1–6 creature generators, Resource Silo, no Citadel, Tavern, City Hall, cannot build level 7 structure.