With Roku following Netflix’s subscriber-less reporting trend (see separate story this week), can we expect media giants like Warner Bros Discovery to fall in line with the new way of doing things by the D2C streaming book, or will WBD et al stand defiant and continue feeding us subscriber metrics as a key performance indicator? WBD, at least for now, does seem loyal to the traditional subscriber-counting approach favored by investors and financial analysts as a measure of scale bordering on obsession. But people are fickle, and priorities can change quickly in business, although executing them is typically less quick. To that end, every new financial report in our inbox feels like the last of a dying breed. In WBD’s…