I wish they'd improve Windows integration and maybe begin to support some competitor tablets/mobiles as well. It seems as though MobileMe is becoming increasingly restricted to Apple only devices, which is no good for me.
Oh, and improve iDisk. But that goes without saying.
I'd love to see this myself too. Not so much the Windows integration, but the mobile phone syncing.
Mail mostly works, but contacts and the calendar won't ever work except on a iPhone...
For example, we got some phones here at work we are testing at the moment. One is the Windows Phone 7.
MS released the connector, but that only syncs media. Nothing else.
I personally don't give anything about syncing media, I want my calendar and contacts synced.
Works OK-ish with my current Blackberry, would love to see it on a WP7 or Android.
I don't want to switch to Gmail, and syning everything to both MobileMe+Gmail ain't possible, as de use of MobileMe doesn't let you configure for Gmail as well...
If only...