I am a big fan of Coursera, but I really think they should organize the Courses along tracks for people wanting to gain multiple skills for a domain or a career.
Their current system of tracks is a signature track that at 39/69$ offers a certificate. Can’t this be upgraded to something like a Data Scientist certification – say if you complete 5-6 courses that are specified.
Also there needs to be much more external social (rather than internal social /forums discussion) as well as some gamification like Codeacademy does (points, badges, leaderboard) to make it more fun.
Lastly- I wish there was a way to read the transcripts fast or at least some way for professionals who are busy to change the rate of learning (the video speed can be changed but its not that effective)
See this- with 370 courses I think Coursera should really build a layer of certifications for multiple courses along a single industry/domain.
DECISION STATS 
I completely agree with you. I’ve been a fan of Coursera since it started, but as the months have passed I’ve wished that I could take my certificated and put them into something more.