There has been a lot going right for the St. Louis Cardinals so far this season, but there is room for growth, of course. The Cardinals are using the 2026 season to see exactly what they have with all of the young guys on the roster. Who should the Cardinals build around and which areas of the club should St. Louis add? That's the overarching question of the 2026 season. When the Cardinals traded a handful of veterans away this past offseason, the club fully bought into this idea of evaluation and development. St. Louis took some money off the books by trading Nolan Arenado, Sonny Gray, Willson Contreras and Brendan Donovan away and currently is 26th in the league in team tax payroll at just over $110.7 million. There is going to be room for this team to add to the payroll at some point when they feel like they are ready to contend. But where will the Cardinals need to add? That's what the organization is trying to determine this season.…