Talk to a local sports bettor long enough and you will get an earful. Nevada casinos are too conservative with their sports bets, they complain. The odds are poor. They won’t take big action. They don’t offer enough lines on games and ignore second-tier sports. Comps on sports bets are small to nonexistent. For their part, casinos often return the sentiment, calling sports gamblers demanding and unprofitable. Want a comp? Try playing some slots, bud.