Hangouts eats battery like mad. The UI/UX is still a big mess: there's really two hangouts webapps; one for calendar calls and one for ad-hoc calls, and that's

Hangouts eats battery like mad. The UI/UX is still a big mess: there's really two hangouts webapps; one for calendar calls and one for ad-hoc calls, and that's a mess. Finally, it's nice to have one single tool, rather than multiple tools for this sort of thing.