Hey Ash, the 2 things you told me, are explained on the quest
The heroes proxy is below the wandering monster: the alt gender heroes or the wizards of zargon. [*Alters may use Wizards of Zargon instead of the other Gender Hero miniatures]
Tiles are explained on point B: [*Reuse tiles B and 2 on left side, Portcullises work as doors].
Waiting for the vid, I hope you like the mirrored detail on the Tomb and the Dragon names, that also works for the quest name :)