I understand that people like Skype for its simplicity, but it's a simple fact that Discord is better (not only for Discovery stuff) in many ways.
I'm using it actively for a week by now, just for the record. Organizing the faction is so much easier using Discord. Roles replace the roster every faction had a google doc for, server channels can have functions such as quick reference (RFP has the important parts of Rheinland laws in there, for example). Voice chat has better quality than Skype (not sure because it could've been an issue on my end). No stupid ads all over the program.
The only thing missing is an inter-server channel for emergencies, for example. With that, it'd be perfect.