I think one of the obvious features the community is lacking is actual specific groups members can subscribe to for specific sharing and collaboration. How many times have you seen someone asking about creating better email templates? Or responsive design for mobile devices?
Wouldn't it be huge if we had related groups we could "subscribe" to where we could pool and share experiences and resources, and actually collaborate?
I'm not talking about face-to-face User Groups, but online community groups, much like you see in LinkedIn.
We could actually share examples of our wok for others to benefit from. Together we would all benefit from shared knowledge and experience and all become better marketers, and I would think much more successful.