Add the feature to the existing game, or create a new game. Add the ability to pass cards between the players on both teams. This would expand the bidding range and make the game more exciting.

There is also a problem with the dealing process. The games become one-sided with one team getting consistently better hands. This seems to happen to either one team or the other. It doesn't appear to happen evenly. So finding a dealing (?algorithm?) process that operates in a more even manner would make the players very much happier.