It's true that the community channels their decision through the witnesses they support. Having a separate polling would mean double voting, in a way.

The idea that witnesses need a feature to express their choice with every fork change is a great one and I hope to see it implemented soon.

The other thing about getting exposure on your posts. This is something I've been thinking about a lot in the past week. We need some algorithms for our feeds that don't rely solely on the posts of the people we follow (and their resteems), in a descending timeline order. It needs to be something smarter, something more dynamic and personalized. That way, posts that get community attention reach a wider spread to get everyone's attention.