We actually do this with reply loading already, but not by default. We have a read-only JSON API and use that to append new replies when you're browsing in a th

We actually do this with reply loading already, but not by default. We have a read-only JSON API and use that to append new replies when you're browsing in a thread (click [Update] or [x Auto] at the top/bottom of a thread). We also have a de-pagination feature that grabs all of the OPs from a board and let's you scroll through the indexes as one giant page.