My 20+ years in the ECM industry has probably skewed my attitude toward using a Shared Drive. After all, I spent years selling the concept that your content should be stored in a repository, not on a Shared Drive. And managed a plethora of projects where we migrated Shared Drives to SharePoint. After all, traditional Shared Drive content is typically unorganized, hard to find, and lives beyond its required lifespan. RecordLion even recently blogged on the topic of Managing a Shared Drive.