I don't know if this is a restriction from the SDK or just the way developers are implementing things. However, there is something I find annoying about many live tiles. It's the way they cycle through information.
There will typically be one tile that contains no useful live information, such as just the icon/graphics for the app. Then it rotates to something useful, like shortcut info, news headline, etc. When it comes to the live tile I really don't need to see the "no info" tile in rotation. I find myself having to wait for the rotation to occur before I can see what's there.
An example of this would be creating a music shortcut or the top headline on the CNN app.
There will typically be one tile that contains no useful live information, such as just the icon/graphics for the app. Then it rotates to something useful, like shortcut info, news headline, etc. When it comes to the live tile I really don't need to see the "no info" tile in rotation. I find myself having to wait for the rotation to occur before I can see what's there.
An example of this would be creating a music shortcut or the top headline on the CNN app.