The main goal of the Commissioner's Exempt List is to protect the league and its reputation while an investigation is ongoing. Think of it like hitting the mute button on a player's involvement in the league until everything gets sorted out. It's not meant to be a permanent solution, but rather a temporary measure to avoid any potential distractions or controversies.
On the other hand, a suspension is like a time-out that's been officially assigned by the league. It's a clear punishment for a specific infraction, and it usually comes with a set duration and terms. Suspensions can be appealed, but they're generally more black-and-white than being placed on the Commissioner's Exempt List.