I feel like your response is equivalent to, "The implemented solution is optimal for me; therefore, it should be optimal for you as well."
Huh? I understood your comment as saying "this useful feature is absent", and intended mine to simply point out that it's actually present.
Reddit Enhancement Suite
If anyone cares, I could probably port this to work on LW without too much trouble. Optimistically it'd just involve opening up the source and replacing reddit.com with lesswrong.com. More realistically, there'd probably be a lot of baked-in assumptions about DOM structure that'd need to be updated to have the UI enhancements make sense.
Anyway, this is mostly just a straw poll to see how many others would be interested in such a thing.