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This increases everyone's chances of getting higher cards. But more importantly, it introduces the option for more doubles and also triples and quadruples.  Triples are three of the same value card, not suit type. If a triple is played by one person, the next person must mirror the same amount of cards (three) and beat the card value. For example, the first person plays three 6s. The next person must play three 7s or three of a higher value or pass. Quadruples operate by the same logic as triples, it's just much more difficult. Jokers can be used for many functions. They can be treated as a wild card, equaling any value card, if you decide to use that rule. They can also clear a trick. If someone plays a Joker, that trick is done and Scum clears away the stack of cards. Like a Joker, a 2 or an 8 can be played to clear a trick. However, an 8 can only be played over a lower-valued card, such as a 6 or a three. An 8 cannot clear a trick when played over a 10 for instance. Capitalism is commonly played as a drinking game and there a couple of different rules that can be added to make the game a little more fun:  Anytime a card value is played that equals the amount of players (i.e. a 4 of diamonds and four players or a 6 of clubs for 6 players), then everyone takes a drink. If a player passes their turn, they have to take a drink. If one player puts down the same value card as what is on the pile, then the next person is skipped and a skipped person has to take a drink.<refhttp://www.gutenberg.us/articles/capitalism_(card_game)</ref>

Summary:
Add another deck of cards. Add the joker card into the game. Use 2s or 8s to clear a trick. Introduce alcohol to spice things up.