I'd like to have an alternative to Skype as well but for different reasons.
First one is the fact that MS put hugely deceptive ads in the Skype android app that pretend to be actual messages from a contact. The fact that the option to disable these ads doesn't work just makes thing even worse!
Secondly I just dislike how they handle contact names and actual skype handles, I can never tell which is which and am unable to say for sure what my actual username is..
Whatsapp does group messages really well and is way ahead of Skype UI wise, but it's linked to your actual phone number which isn't great, something like whatsapp with the possibility of just creating an anonymous account would be great.