Nothing unites the crowded field of Democrats running to displace Republican Larry Hogan as Maryland’s next governor like decrying the incumbent’s decision to kill the Baltimore region’s planned Red Line, the 14-mile, $2.9 billion east-west light rail line in 2015. They hate that Governor Hogan denied the jobs, the investment and the improved connections between some of the area’s least-accessible neighborhoods with jobs from the Centers for Medicare and Medicaid Services to the west and Johns Hopkins Bayview Medical Center to the east. We’re with them on that. But what to do about it? That’s where things get a little dicier.