I have witnessed Skype to go from almost perfect video & chat communicator to absolute crap over almost 10 years, and I feel very sad that it has come to rip off Snapchat. There is no alternative like the old Skype now in the desktop.
But I hope for the return of XMPP. While the client development stagnated for the most part over the last years, there are a few which seem to catch up with the innovation of the last years (conversations, chat secure).