Time shares are a $ 35.7% billion industry with a bad reputation, but execs say they've put the industry's bait and switch days behind them, rebranding time shares as vacation clubs that offer an increasing range of accommodations and experiences that are meant to appeal to younger people. For the largest companies, the changes have worked. The leading players are worth billions of dollars, but the industry is still grappling with some fundamental issues.Time shares are typically a terrible investment and t ...