A cool feature in skype would be if skype forewarded all calls to an other number when status is away for instance.
This would of course mean that the caller has to accept to swich to SkypeOUT for that call, you can choose to pay for the call yourself (friend's skype->Your Skype->SkypeOUT to your phone)
This way your friends can call you cheap or free even if you are on a vacation or just at the mall.
Hope this is possible
-Kjetil Nesvik