I don't think we need a code change but It's definitely nice to know who contributing to the platform and who isn't. Clearly in my mind voting only for yourself means you're not contributing as much as you should. If you can spend the time typing out a comment on someone else's post you can easily read a couple of other comments and give them a like too.

I'm curious if you can post the users with the most rewards and the fewest comments per post. That's something that bugs me if people are getting huge rewards but never talk to the community.