I really like non-standard decks (suits, card count, graphics) and I've come across some really great ones on BGG like the Stardeck and Empire Deck. These are decks with more than 5 suits, originally so that more people could play Bridge together. I don't know if it's just because 5+-player Bridge isn't a huge draw, but it seems like these just aren't a big thing. I can't find any on eBay or Amazon and the ones that have websites are out of stock. Are 5+ suit decks just not as popular as when these decks came out (early 90s), and what do you guys think of them?

If you like playing cards with additional suits, you might be interested in Deck6: http://www.jamesrobertwatson.com/deck6.html

It has 3 red suits (hearts, diamonds and shields) and 3 black suits (spades, clubs and cups).