This would actually make it easier to see when someone is talking to someone in particular, if there are few enough people to see them there that is.
And for those who would not want this, a simple interface toggle in settings would be nice. Just like we can disable the request assistance option, players should be able to disable this right-click feature.
Very nice idea though. You have my support.
"I see a world where there is no need to flatter and deceive: where power is there to be taken by those with the strength to do so." - Bandos