Even when others had Cozart penciled in as the longterm SS I was in favor of keeping our eyes open for an upgrade, but I could live with Cozart batting 8th in a lineup where we have a legitimate left fielder. But it's apparently Cozart batting #2 or nothing with Dusty and nothing is a far superior option.
Speaking of upgrades, while Segura is obviously going nowhere, I would potentially look into seeing what pitching it would take for Milwaukee to part with Lucroy.