I don't really like hiding the contents. The most fun part in Black Market for me is figuring out if it's worth going for it. If you hide the contents, you kind of have to go for it every time, and I really don't like cards that you have to go for most of the time. Also not sure as well how you would hide the contents with cards in it that add extra piles or the Baker token for that matter.
Only thing I can think up of is a "dynamic" thing where you add Ruins when you see a Looter card revealed. However, this don't sound Kosher. IMO, it's fine that users have full knowledge of all cards available, even if accessibility ain't guaranteed
It'd be really nice to have the option to include every kingdom card except the ones in the current kingdom, like it actually says on the card.
An option might be okay, but I really don't like it as a default. Because this means we always play with Prizes, Travellers, a bane card, Mercenary, Madman ..., the interface would become proabably very unclear. Also for the same reasoning, you kind of have to go for Black Market if there is every card in it which ruins the fun of figuring out if it's worth going for it.[/quote][shrug] To me, it's not different than something like risking to see if your Treasure Maps strike Gold.