It’s late May. And there’s nothing much Steelers fans can do right now other than ruminate over stuff like win totals. In spite of some big-time signings in the off season, one analytics expert isn’t optimistic on Pittsburgh making the playoffs. Cynthia Frelund, an analytics expert at NFL Network, delved deep into the schedules of all 32 teams. The league released them this week. Then she studied all personnel, including the draft choices, who gathered for rookie camps earlier this month. Then she came up with a ranking based on her win projections. The top seven teams in each conference make …