Haunted Manor is bad as Mandarin is one of the weakest cards in the game and only worthwhile for the on-gain effect.
A terminal Gold is probably somewhere between a 4 and a 5 and while topdecking one card is OK to nerf a card, topdecking two, self-Ghost-shipping yourself, just hurts yourself and is hardly ever worth the terminal Gold and 1 VP at the end of the game.
The Traveller line is interesting as it starts with a good quasi one-shot that you don't necessarily want early on.
I also like that if you feel that the game might end before you reach the end of the line you can cut it short and transform a card into Distant Lands style VPs.
The actual play effects could be a bit more innovative though. Maid is after all just Duchess. Brewery seems like a simple Scout variant but I like it as it interacts with the other cards in the Traveller line.