I feel like making them distinctive would just create unnecessary drama too. The way it is now, you can leave your opinion on someone's post - be it as negative or as positive - and the receiver would probably not care more than a few seconds (at least they shouldn't, come on) because they don't know who it's from anyway. Making the poster visible would just enable that person to backfire and it ends up doing more harm than good. And obviously it would also cause people to not want to leave a negative opinion anymore because it's not anonymous, so where's the point in that.
I'm gonna agree with everything Yoshikkko said, especially this part. I mean, if you wanna leave your name when you make a post comment, more power to you. Nice balls ya got there. If not, that's fine too. If someone is blatantly trolling and being rude, you can take it to hstaff since they can see who leaves post comments for everyone and they can handle it. I just don't see the point in making them visible. I think it'd cause more problems than it's worth.