Would be pretty cool if there was an in game messaging system where players could respond to your chat posts privately (and publicly both if it would benefit the whole community). Sometimes I don’t get an answer right away and I have to scroll down countless conversations to weed out my response (if there even is one) on the guild and world chats. Maybe just like click on the chat dialogue and a window for response and a window comes up and then you type your response and click public private or both? Obviously this kind of what forums are like but it would be cool to get it in game. I like instant satisfaction and may promote more interaction… 
If something like this already exists kindly point me in that direction.