The badge system is a fairly successful large scale experiment in social engineering: give people little shiny badges for doing the things you want them to do. If you have a decent answer to someone's problem, and you take the time to craft it properly, you can turn what would be a 2-3 vote answer to a 10+ vote answer and wind up with yet another badge. Cool for you, much cooler for the network.
But when it comes to comments, once you have 10 comments of 5+ (Pundit), there is no badge-worthy motivation to continue to make good comments. Is this intentional? Or an oversight?
Now don't get me wrong, this is not a request for some kind of gold badge for comments (like 100 5+ vote comments) nor a recurring silver badge (for example a 10+ vote comment) because those would require a discussion to really flesh out what the desired behavior and thresholds are, and that's not what this is about. This is more about have those discussions ever taken place, and is there a desire to encourage people to make good comments?