This seems like a good idea. But then - there is other side to why people comment.
Many new users including me - don't have the following to start with. They rely on the community of influential users.
Hence, they need the push to go on. That is the reason - I contribute more to comment than to my post.
Because my post might get 1 or 2 views. But in comments, I am guaranteed to at least 5 to 10 views. And if I am lucky, many more users might see the post.
So there is that.
Good points Taraz...