Meanwhile, if anyone is looking for this kind of solution right now, we are making a tool for companies and teams to collaborate and work better.
Check us out at: https://dapulse.com/
Check us out at: https://dapulse.com/
What's the appeal over something like JIRA?
daPulse is a collaboration tool, so R&D, design, marketing, management - everyone in the company uses it.
It is a bit like you described, PM + social + tasks, but it's designed to help everyone focus on the 'big things'. What it really does is gives everyone in the company one unified view of top priorities, so everyone's in focus on what's important and it gets everyone collaborating with zero e-mails.
As well as task tracking, reports and categorisation there's all kinds of dashboards, agile views (swimlanes, etc), as well as social features like commenting and @mentioning.