A consistent experience.
Yes... Mesh allows you to sync your folders to SkyDrive... however try to access those same files/folders from your WP7 device through Office, or the Photos hub.
Now... try the reverse. If you've a WP7 device, chances are photos you take are synced to SkyDrive... now on your desktop with Windows Live Mesh 2011 installed... try to find that same photo directory and then sync it to your local PC.