Thinking through product landing page - feedback appreciated.

I'm racking my brain on this UX and have probably been on this particular issue a little too long and I'm getting fuzzy headed. I'd love some ideas feedback etc. Please limit your feedback to UX and IA. What kinds of content is presented and where or in what order...

There are two versions: A and B.

GOAL

* Better global navigation (relationship between the Assembly platform and individual products)
* Better answer to the question "What's happening on this product?"
* Better answer to the question "What can I do to chip in and help on this product?"

These two versions primarily think about activity differently.

*A* thinks about the activity on objects like posts, tasks, etc as a thing that belongs in its own stream so you can see more at once.

*B* thinks about the activity and objects being more unified, but only showing the most recent activity on each object.

For either of these, you'd tap into a tile and open a focus mode where you could interact by commenting or submitting work for coins for instance.

Rather than just picking A or B, I'd love your thoughts or questions. Tough problem to solve. Tough tensions to reconcile.