Skype Wifi subscription:
Skype Wifi that is strong enough to handle Group Video calls on Windows Phone
in group video call Allow the user to select which participant to focus on.
use a different chat sync program that will allow the user to set to which device they want to sync their chat/call.
use a Windows 7 like GUI for Windows Phone, Windows 8 like GUI is no good.
Add notification settings and privacy settings on Windows Phone
Add Snapshot gallery or Photo Gallery
The ads should be small or better no ads at all.
Make a Skype version for Windows Phone far better than any other Skype version for mobile.
and make Nokia a Top mobile again.