Opening day roster is the roster for 6 weeks or so....how many games do inferior SP start in 6 weeks? Yes, depth is important, but the issue is that the old guys w/o options aren't very good, and the young guys might be quite good. I'd rather have less depth, and quality, than mediocre starters, with quality sitting in AAA adding no value to the MLB roster. When do Berrios and Duffey come up if no one is hurt for long, and the other two are "adequate" but not good? Even if someone is hurt for a week, the guy that comes up is sent right back down in your scenario, right? The team you's listed looks pretty "meh" to me. One elite player, 4 years into a rebuild (who was already in they system). one. One very good player at 2B (who was already in the system). No great SP, no great RP.