The primary reason for this request is to help people understand to what they are replying. In Discussion View, it is clear that you are replying/quoting the post immediately above the reply box. Chronological view muddies that, where people may use the OP reply box embedded in the page, to reply to the last comment they see.
This might help with the few instances I have seen where someone has replied in this manner. I assume that since it is different for Discussion View, it is possible to do this for Chronological View as well.
Thanks for your hard work, @Wuks